# A296770 (b-file synthesized from sequence entry)
0 1
1 5
2 24
3 111
4 500
5 2210
6 9632
7 41531
8 177564
9 754014
10 3184016
11 13382710
12 56026984
13 233765636
14 972504704
15 4035441491
16 16707488684
17 69033916166
18 284733161264
19 1172510645666
20 4821324991064
21 19799091571676
22 81208982686784
23 332726301861086
24 1361862906980120