# A032276 (b-file synthesized from sequence entry) 1 5 2 15 3 35 4 120 5 377 6 1505 7 5895 8 25395 9 110085 10 493131 11 2227275 12 10196680 13 46989185 14 218102685 15 1017448143 16 4768969770 17 22440372245 18 105966797755 19 501938733555 20 2384200683816 21 11353290089305