# A149102 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 8
4 33
5 96
6 365
7 1256
8 4692
9 17453
10 66767
11 256482
12 1001942
13 3926568
14 15583714
15 62184933
16 249869139
17 1009404100
18 4096851309
19 16704180961
20 68417152583
21 281223053247
22 1160052280209
23 4799545992873
24 19914517613967
25 82863777810256
26 345665800672430
27 1445293788790669
28 6056038669330241