# A174508 (b-file synthesized from sequence entry)
0 1
1 7
2 65
3 1
4 535
5 4353
6 1
7 35367
8 287297
9 1
10 2333751
11 18957313
12 1
13 153992263
14 1250895425
15 1
16 10161155671
17 82540140801
18 1
19 670482282087
20 5446398397505
21 1
22 44241669462135
23 359379754094593
24 1
25 2919279702218887
26 23713617371845697
27 1