# A097111 (b-file synthesized from sequence entry)
0 1
1 3
2 7
3 15
4 43
5 75
6 247
7 375
8 1363
9 1875
10 7327
11 9375
12 38683
13 46875
14 201607
15 234375
16 1040803
17 1171875
18 5335087
19 5859375
20 27199723
21 29296875
22 138095767
23 146484375
24 698867443
25 732421875
26 3527891647
27 3662109375
28 17773675963
29 18310546875