# A249926 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 24
4 229
5 2449
6 28035
7 336100
8 4165920
9 52953884
10 686517601
11 9042628374
12 120669757468
13 1627932844657
14 22166277534398
15 304230231637560
16 4204474770868230
17 58458984141770754
18 817176088436608178
19 11477568712206346244
20 161897000202383717334
21 2292445680627209103645