# A007878 (b-file synthesized from sequence entry) 1 1 2 2 3 5 4 16 5 59 6 246 7 1103 8 5247 9 26059 10 133881 11 706799 12 3815311 13 20979619 14 117178725 15 663316190 16 3798697446 17 21976689397