# A372076 (b-file synthesized from sequence entry) 0 0 1 1 2 2 3 3 4 7 5 20 6 51 7 121 8 290 9 711 10 1747 11 4268 12 10407 13 25405 14 62066 15 151611 16 370255 17 904196 18 2208267 19 5393233 20 13171682 21 32168415 22 78563131 23 191870876 24 468596895 25 1144430581 26 2794984562 27 6826049523 28 16670917207 29 40714541300