# A090754 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 13
4 73
5 127
6 2611
7 19993
8 55291
9 1436473
10 14004451
11 48366487
12 1584090553
13 2599545379
14 74472090481
15 2865429498961
16 2948475507877
17 178482956754811
18 7823019065848003
19 118402856414023933
20 88402610721571141