# A036571 (b-file synthesized from sequence entry) 0 0 1 1 2 3 3 11 4 27 5 91 6 347 7 859 8 2907 9 11099 10 43867 11 109403 12 371547 13 1420123 14 5614427 15 22391643 16 55946075 17 190163803 18 727034715 19 2874518363 20 11464452955 21 45824191323 22 114543668059 23 389421575003