# A148536 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 5 4 19 5 45 6 161 7 457 8 1571 9 5133 10 17379 11 60455 12 208771 13 742011 14 2650483 15 9470073 16 34792573 17 125775751 18 467624763 19 1722320273 20 6418015101 21 24102740527 22 90119100729 23 342401562717 24 1291652729511 25 4926199415291 26 18809379874591 27 71857805765303 28 277026203443523 29 1063029577433965 30 4116504920565953