# A187444 (b-file synthesized from sequence entry)
0 1
1 5
2 35
3 231
4 1716
5 12155
6 92378
7 676039
8 5200300
9 38779380
10 300540195
11 2268783825
12 17672631900
13 134564468610
14 1052049481860
15 8061900920775
16 63205303218876
17 486734856412028
18 3824345300380220
19 29566145391215356
20 232714176627630544
21 1804857108504066435