# A037607 (b-file synthesized from sequence entry) 1 1 2 9 3 66 4 463 5 3243 6 22704 7 158929 8 1112505 9 7787538 10 54512767 11 381589371 12 2671125600 13 18697879201 14 130885154409 15 916196080866 16 6413372566063 17 44893607962443 18 314255255737104 19 2199786790159729