# A004137 (b-file synthesized from sequence entry)
1 0
2 1
3 3
4 6
5 9
6 13
7 17
8 23
9 29
10 36
11 43
12 50
13 58
14 68
15 79
16 90
17 101
18 112
19 123
20 138
21 153
22 168
23 183
24 198
25 213
26 232