# A074084 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 2
4 9
5 32
6 102
7 306
8 883
9 2480
10 6828
11 18514
12 49597
13 131568
14 346194
15 904738
16 2350695
17 6076960
18 15641304
19 40103778
20 102473969
21 261046144
22 663180222
23 1680628946
24 4249496795
25 10722962256
26 27007159428
27 67904097074