# A056550 (b-file synthesized from sequence entry)
1 1
2 2
3 8
4 11
5 17
6 63
7 180
8 259
9 818
10 2161
11 4441
12 8305
13 11998
14 694218
15 3447076
16 4393603
17 57402883
18 73459800
19 121475393
20 2068420025
21 5577330586
22 13320495021
23 35297649260
24 138630178659
25 988671518737