# A149174 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 10
4 34
5 118
6 411
7 1538
8 5769
9 22118
10 86604
11 340926
12 1363754
13 5487497
14 22284031
15 91060167
16 374275887
17 1546749984
18 6419406754
19 26758916234
20 111933134273
21 469802568778
22 1977772435371
23 8348323510282
24 35328472561762
25 149837566877982
26 636847860037219
27 2711964381561554
28 11569269389329031