# A001272 (b-file synthesized from sequence entry)
1 3
2 4
3 5
4 6
5 7
6 8
7 10
8 15
9 19
10 41
11 59
12 61
13 105
14 160
15 661
16 2653
17 3069
18 3943
19 4053
20 4998
21 8275
22 9158
23 11164
24 43592
25 59961