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A291380 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 1
5 5
6 10
7 10
8 5
9 2
10 10
11 45
12 120
13 210
14 253
15 225
16 225
17 500
18 1375
19 3005
20 5025
21 6625
22 7575
23 9850
24 18508
25 40150
26 78275
27 128375
28 180625
29 237888
30 345090
31 607105
32 1163155
33 2109140
34 3426771
35 5056055
36 7237835
37 11059960
38 18816930
39 33638409
40 58293475

[0,0,0,0,1,5,10,10,5,2,10,45,120,210,253,225,225,
 500,1375,3005,5025,6625,7575,9850,18508,40150,
 78275,128375,180625,237888,345090,607105,1163155,
 2109140,3426771,5056055,7237835,11059960,18816930,
 33638409,58293475]

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Last modified April 16 10:45 EDT 2024. Contains 371709 sequences. (Running on oeis4.)