# A113853 (b-file synthesized from sequence entry) 1 108 2 12500 3 84375 4 337500 5 3294172 6 22235661 7 88942644 8 2573571875 9 10294287500 10 69486440625 11 277945762500 12 1141246682444 13 7703415106497 14 30813660425988 15 891598970659375 16 1211500426369012 17 3566395882637500 18 8177627877990831 19 24073172207803125 20 32710511511963324