# A027335 (b-file synthesized from sequence entry)
0 1
1 2
2 8
3 57
4 439
5 3443
6 27301
7 218451
8 1761801
9 14308236
10 116924574
11 960792743
12 7934362761
13 65817379234
14 548190108992
15 4582721143115
16 38439422184737
17 323420836565182
18 2728901670629808
19 23085534477376835
20 195766417450435773
21 1663818353085104919