2324581983domain: NAppears in sequences"BIK" (reversible, indistinct, unlabeled) transform of 1,3,5,7...at n=20A032127Numbers n such that the multiplicative group of integers modulo n is isomorphic to C_m X C_m, m > 1.at n=35A305236Odd terms in A305236.at n=17A307527