# A027251 (b-file synthesized from sequence entry)
0 1
1 3
2 10
3 27
4 76
5 195
6 519
7 1299
8 3364
9 8311
10 21191
11 51981
12 131273
13 320715
14 804845
15 1961823
16 4901782
17 11932489
18 29719325
19 72291325
20 179610365
21 436699813
22 1082870377
23 2632116551
24 6516122403
25 15835522783
26 39147779575