# A174437 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 4 5 9 6 10 7 16 8 31 9 36 10 48 11 105 12 129 13 315 14 316 15 387 16 538 17 1285 18 1542 19 2048 20 3855 21 4599 22 4864 23 7760 24 13797 25 18166 26 24417 27 60787 28 104694