# A075957 (b-file synthesized from sequence entry) 0 4095 1 258111 2 1864135 3 2987609 4 3582634 5 8080651 6 25473886 7 42292659 8 50776967 9 64081340 10 76144271 11 144414678 12 207994405 13 281196137 14 355414943 15 552485212 16 792267444 17 1128886935 18 1495779625 19 2139400570 20 2234223869