105670domain: NAppears in sequences"BFK" (reversible, size, unlabeled) transform of 1,3,5,7...at n=15A032046Number of asymmetric mobiles (circular rooted trees) with n nodes and 4 leaves.at n=19A055365Number of n X 2 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2 or 3 1s.at n=11A295346