Theory of superconductor-ferromagnet (S-F) heterostructures with two and more ferromagnetic layers predicts generation of a long-range, odd-in-frequency triplet pairing at non-collinear alignment (NCA) of the F-layers magnetizations [1]. Following the ideas of the superconducting triplet spin-valve [2-4] we have detected that triplet pairing: switching of the proximity effect coupled Co/CoOx/Cu41Ni59/Nb/Cu41Ni59 heterostructures from normal to superconducting state. The resistance of the sample as a function of an external magnetic field shows that the system is superconducting at the collinear alignment of the Cu41Ni59 and Co layers magnetic moments, but switches to the normal conducting state at the NCA configuration. The existence of the Tc minimum at the NCA regime is consistent with the theoretical prediction of the long-range triplet pairing appearance.   The Co/CoOx/Cu41Ni59/Nb/Cu41Ni59 layered heterostructures were prepared by magnetron sputtering on silicon substrate covered by a silicon buffer layer prior the heterostructures deposition [5]. The Co/CoOx composite layer provided strong exchange biasing (~ 1800 Oe) of the adjacent hard ferromagnetic Cu41Ni59 alloy layer, while the outer soft Cu41Ni59 alloy layer could be remagnetized by a weak external magnetic field creating controllable alignments with respect to the hard interior Cu41Ni59 alloy layer and the metallic Co layer as well. Upon cycling the in-plane magnetic field in the range ± 6 kOe and keeping temperature close to the superconducting transition, a memory effect has been detected. If the magnetic field was dropped to zero from the initial field-cooling direction at 10 kOe, the heterostructures resistance dropped down to the almost superconducting low-resistive state. Changing polarity of the field, raising its magnitude to -6 kOe and driving the field to zero again brought the system to the resistance at the normal conducting state. The bistability was repeatedly reproduced upon further cycling along the full magnetic hysteresis loop of the heterostructures. Both low- and high-resistive states at zero magnetic field were determined solely by pre-history of the field cycling and did not need biasing field to keep them steady.   The observed memory effect, caused by generation of the triplet pairing at non-collinear magnetic configurations in the investigated nanostructures, seems to be promising for practical applications in superconducting spintronics.   The support by A.v.Humbold foundation grant “Institutspartnerschaften”, and STCU research project “Experimental investigation of the proximity effect in layered superconductor/ferromagnet hybrid structures”(registered STCU number # 5982), is gratefully acknowledged.