# A303392 (b-file synthesized from sequence entry) 0 1 1 4 2 12 3 52 4 156 5 612 6 2028 7 7892 8 27324 9 107396 10 384844 11 1520436 12 5566876 13 22069796 14 81990252 15 325707348 16 1222582268 17 4862950020 18 18395472460 19 73233825524 20 278700724764 21 1110232691108 22 4245596648876 23 16920914168148 24 64963831455996 25 259012955299396