# A019435 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 7 5 29 6 46 7 52 8 68 9 139 10 150 11 161 12 172 13 275 14 2295 15 10560 16 10915 17 14817 18 1296672 19 5117932 20 80143857 21 245850922 22 267241724 23 6167950454 24 11026201022 25 12068659184