# A199543 (b-file synthesized from sequence entry) 0 1 1 2 2 9 3 59 4 462 5 4011 6 37253 7 362877 8 3662590 9 38001809 10 403118473 11 4354812135 12 47769686769 13 530912871966 14 5968147436150 15 67766781921248 16 776407323511627 17 8967754230210974 18 104351087348892229 19 1222602680134075216 20 14416253295843685409 21 171018068867340738997