# A150079 (b-file synthesized from sequence entry) 0 1 1 2 2 6 3 18 4 68 5 243 6 970 7 3741 8 15636 9 63207 10 270422 11 1127616 12 4913616 13 20943040 14 92434154 15 400506478 16 1785534204 17 7835181876 18 35208226011 19 156068030420 20 705850854116 21 3154666032504 22 14344306255934 23 64547989929729 24 294831596071278 25 1334358936965836 26 6118522897312851 27 27827559628139189