151971domain: NAppears in sequencesNumber of nonassociative right conjugacy closed loops of order n up to isomorphism.at n=25A281554Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + b(n-2) + 2, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=20A294554