# A055986 (b-file synthesized from sequence entry) 0 10 1 15 2 20 3 30 4 45 5 65 6 95 7 140 8 285 9 575 10 1235 11 3875 12 12035 13 57425 14 277685 15 1898225 16 17948735 17 257659250 18 6064652775 19 231735692810 20 19086421036065 21 3118766577500345 22 1345923015886969490 23 1802200377671427935160 24 7651243417360291340175315