# A012333 (b-file synthesized from sequence entry) 0 2 1 0 2 160 3 1344 4 216448 5 16445440 6 2588594944 7 488066424832 8 124899844644864 9 40104870299090944 10 15952220652568215552 11 7679842459021822656512 12 4403590872401925633540096