# A150789 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 30 4 136 5 585 6 2770 7 12583 8 60703 9 283705 10 1382991 11 6577224 12 32276173 13 155288583 14 765485523 15 3712957324 16 18361035980 17 89586761260 18 444040982650 19 2176159223982 20 10804788645653 21 53132340861000 22 264151253880211 23 1302420514209831 24 6481646673682990 25 32026182851306522 26 159509303727005468