# A003279 (b-file synthesized from sequence entry) 0 1 1 6 2 30 3 144 4 666 5 3024 6 13476 7 59328 8 258354 9 1115856 10 4784508 11 20393856 12 86473548 13 365034816 14 1534827960 15 6431000832 16 26862228450