# A356597 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 26
4 172
5 1354
6 12403
7 127945
8 1471006
9 18589503
10 255951308
11 3808299648
12 60871219649
13 1039240205691
14 18868377309780
15 362838034712928
16 7364831540699076
17 157305165900364641
18 3526069495916583260
19 82744901973286823822
20 2028396974232995349291