# A049148 (b-file synthesized from sequence entry) 1 1 2 1 3 0 4 0 5 2 6 2 7 2 8 13 9 24 10 32 11 118 12 286 13 482 14 1328 15 3540 16 7091 17 17244 18 46138 19 103468 20 243164 21 633618 22 1515992 23 3582432 24 9101608 25 22481022 26 54065300 27 135345444 28 338668916 29 828680300 30 2063798632 31 5185819200 32 12855728210 33 32040478058