# A000663 (b-file synthesized from sequence entry) 0 1 1 2 2 9 3 37 4 183 5 933 6 5314 7 32043 8 207212 9 1415934 10 10200289 11 77018442 12 607474564 13 4987909231 14 42519634303 15 375395726926