# A195562 (b-file synthesized from sequence entry) 1 1 2 24 3 40 4 63 5 1600 6 2624 7 4161 8 105560 9 173160 10 274559 11 6965376 12 11425920 13 18116737 14 459609240 15 753937576 16 1195430079 17 30327244480 18 49748454080 19 78880268481 20 2001138526424 21 3282644031720 22 5204902289663 23 132044815499520