# A151432 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 12 4 45 5 174 6 693 7 2891 8 12156 9 52538 10 228973 11 1012996 12 4518961 13 20342820 14 92221108 15 420719274 16 1930067929 17 8897118329 18 41194214136 19 191470957420 20 893110958485 21 4179139628301 22 19612391986898 23 92283693683299 24 435288156265051 25 2057796624112995 26 9748277239594671 27 46268733559268079