# A056382 (b-file synthesized from sequence entry) 1 3 2 6 3 15 4 45 5 69 6 381 7 387 8 1890 9 3393 10 14907 11 17799 12 139518 13 133101 14 798129 15 1804431 16 5452434 17 8072529 18 64596051 19 64573623 20 437717394 21 872156889 22 3138141621 23 4279259571 24 35361942282 25 42364514331