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A026815 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 1
11 2
12 3
13 5
14 7
15 11
16 15
17 22
18 30
19 41
20 54
21 73
22 94
23 123
24 157
25 201
26 252
27 318
28 393
29 488
30 598
31 732
32 887
33 1076
34 1291
35 1549
36 1845
37 2194
38 2592
39 3060
40 3589
41 4206
42 4904
43 5708
44 6615
45 7657
46 8824
47 10156
48 11648
49 13338
50 15224
51 17354
52 19720
53 22380

[0,0,0,0,0,0,0,0,0,1,1,2,3,5,7,11,15,22,30,41,54,
 73,94,123,157,201,252,318,393,488,598,732,887,
 1076,1291,1549,1845,2194,2592,3060,3589,4206,4904,
 5708,6615,7657,8824,10156,11648,13338,15224,17354,
 19720,22380]

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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)