# A097345 (b-file synthesized from sequence entry) 0 1 1 5 2 29 3 103 4 887 5 1517 6 18239 7 63253 8 332839 9 118127 10 2331085 11 4222975 12 100309579 13 184649263 14 1710440723 15 6372905521 16 202804884977 17 381240382217 18 13667257415003 19 25872280345103 20 49119954154463 21 93501887462903