# A002254 (b-file synthesized from sequence entry)
1 1
2 3
3 7
4 13
5 15
6 25
7 39
8 55
9 75
10 85
11 127
12 1947
13 3313
14 4687
15 5947
16 13165
17 23473
18 26607
19 125413
20 209787
21 240937
22 819739
23 1282755
24 1320487
25 1777515