# A024433 (b-file synthesized from sequence entry)
3 2
4 1
5 10
6 25
7 49
8 651
9 819
10 8420
11 67243
12 55748
13 1812811
14 14107093
15 11951940
16 546956046
17 5292109758
18 8426418390
19 216826368641
20 3159650017954
21 9238538881880
22 99564223542300
23 2578113791896500
24 12368492541141000
25 35241941082414495