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A309881 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 1
10 2
11 3
12 5
13 7
14 9
15 12
16 15
17 19
18 24
19 30
20 37
21 45
22 54
23 64
24 75
25 88
26 102
27 118
28 136
29 156
30 178
31 202
32 228
33 257
34 288
35 322
36 359
37 399
38 442
39 489
40 539
41 593
42 651
43 713
44 779
45 850
46 925
47 1005
48 1090
49 1181
50 1277
51 1379
52 1487
53 1601
54 1721
55 1848
56 1981
57 2122

[0,0,0,0,0,0,0,0,0,1,2,3,5,7,9,12,15,19,24,30,37,
 45,54,64,75,88,102,118,136,156,178,202,228,257,
 288,322,359,399,442,489,539,593,651,713,779,850,
 925,1005,1090,1181,1277,1379,1487,1601,1721,1848,
 1981,2122]

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Last modified April 26 04:36 EDT 2024. Contains 371989 sequences. (Running on oeis4.)