# A085376 (b-file synthesized from sequence entry) 1 1 2 3 3 11 4 30 5 109 6 297 7 1079 8 2940 9 10681 10 29103 11 105731 12 288090 13 1046629 14 2851797 15 10360559 16 28229880 17 102558961 18 279447003 19 1015229051 20 2766240150 21 10049731549 22 27382954497 23 99482086439 24 271063304820 25 984771132841