# A055788 (b-file synthesized from sequence entry)
0 1
1 31
2 186
3 1581
4 7316
5 30039
6 103974
7 330429
8 947050
9 2533289
10 6325550
11 14969435
12 33665380
13 72544185
14 150236850
15 300540195
16 582235491
17 1096087770
18 2009383420
19 3595937070
20 6292703640
21 10787811210
22 18142828740
23 29975617710