# A055589 (b-file synthesized from sequence entry)
0 0
1 1
2 6
3 26
4 96
5 321
6 1002
7 2972
8 8472
9 23392
10 62912
11 165504
12 427264
13 1085184
14 2717184
15 6718464
16 16427008
17 39763968
18 95387648
19 226951168
20 535953408
21 1257046016
22 2929852416
23 6789267456
24 15648423936
25 35888562176
26 81927340032