# A211211 (b-file synthesized from sequence entry) 0 1 1 2 2 6 3 30 4 205 5 1750 6 17766 7 207942 8 2746815 9 40315858 10 649688072 11 11387466948 12 215440517656 13 4371810051908 14 94649397546302 15 2176321870192342 16 52938365091640943 17 1357592080006964806 18 36593629200726397630 19 1033979281229140895582 20 30552322294916306960625