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A263361 as a simple table

n a(n)
0 1
1 0
2 0
3 0
4 0
5 0
6 1
7 2
8 3
9 4
10 5
11 6
12 8
13 10
14 15
15 20
16 30
17 40
18 58
19 76
20 106
21 140
22 191
23 252
24 344
25 454
26 613
27 814
28 1091
29 1442
30 1926
31 2538
32 3368
33 4432
34 5852
35 7678
36 10107
37 13222
38 17337
39 22636
40 29582
41 38518
42 50195
43 65198
44 84712
45 109784
46 142254
47 183924
48 237742
49 306688

[1,0,0,0,0,0,1,2,3,4,5,6,8,10,15,20,30,40,58,76,
 106,140,191,252,344,454,613,814,1091,1442,1926,
 2538,3368,4432,5852,7678,10107,13222,17337,22636,
 29582,38518,50195,65198,84712,109784,142254,
 183924,237742,306688]

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Last modified April 19 16:21 EDT 2024. Contains 371794 sequences. (Running on oeis4.)