# A367260 (b-file synthesized from sequence entry)
0 1
1 1
2 6
3 36
4 251
5 1881
6 14817
7 120950
8 1014042
9 8680377
10 75552553
11 666614637
12 5948817600
13 53599239101
14 486926148000
15 4455202562652
16 41018936164660
17 379747493741643
18 3532914858433284
19 33012260400580342
20 309692626084981245
21 2915659701275923491