# A153317 (b-file synthesized from sequence entry)
0 1
1 10
2 21
3 220
4 461
5 4830
6 10121
7 106040
8 222201
9 2328050
10 4878301
11 51111060
12 107100421
13 1122115270
14 2351330961
15 24635424880
16 51622180721
17 540857232090
18 1133336644901
19 11874223681100