# A370474 (b-file synthesized from sequence entry)
0 1
1 2
2 9
3 54
4 372
5 2778
6 21873
7 178786
8 1502649
9 12904524
10 112741664
11 998871030
12 8953443276
13 81047485148
14 739846170864
15 6803054508702
16 62954736555836
17 585850907166084
18 5479077065774682
19 51470699845616004
20 485456696541512442
21 4595280949098247422