# A020999 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 1
4 1
5 1
6 1
7 1
8 2
9 2
10 3
11 3
12 5
13 6
14 8
15 10
16 14
17 17
18 24
19 30
20 41
21 53
22 72
23 93
24 126
25 165
26 222
27 293
28 395
29 522
30 704
31 936
32 1259
33 1681
34 2263
35 3027
36 4079
37 5470
38 7371
39 9906
40 13361
41 17980
42 24271
43 32712
44 44182
45 59626
46 80598
47 108879
48 147285
49 199165