# A036571 (b-file synthesized from sequence entry)
0 0
1 1
2 3
3 11
4 27
5 91
6 347
7 859
8 2907
9 11099
10 43867
11 109403
12 371547
13 1420123
14 5614427
15 22391643
16 55946075
17 190163803
18 727034715
19 2874518363
20 11464452955
21 45824191323
22 114543668059
23 389421575003