# A150851 (b-file synthesized from sequence entry)
0 1
1 2
2 8
3 32
4 140
5 626
6 2886
7 13490
8 63872
9 305112
10 1467868
11 7102336
12 34517496
13 168387396
14 823951534
15 4042200638
16 19873743788
17 97891883374
18 482955922222
19 2385980736896
20 11801790984722
21 58436594936270
22 289615703646050
23 1436524045239548
24 7130447748994688
25 35415979831479054
26 176007162177169918