# A149120 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 9
4 32
5 103
6 361
7 1307
8 4792
9 18033
10 68631
11 265451
12 1034256
13 4083197
14 16204618
15 64889975
16 261337858
17 1058251013
18 4309632977
19 17616277293
20 72364546556
21 298151009423
22 1233408725210
23 5115914210353
24 21288345954796
25 88803907834511
26 371383647629043
27 1556761843796677
28 6538881650516046