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A291381 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 0
5 1
6 6
7 15
8 20
9 15
10 6
11 2
12 12
13 66
14 220
15 495
16 792
17 925
18 810
19 648
20 1036
21 3126
22 8580
23 18566
24 31848
25 44034
26 50644
27 54384
28 74328
29 153161
30 354702
31 738966
32 1312380
33 1988814
34 2638668
35 3297933
36 4531980
37 7814811
38 15621794
39 30839391
40 55350396
41 88575614

[0,0,0,0,0,1,6,15,20,15,6,2,12,66,220,495,792,925,
 810,648,1036,3126,8580,18566,31848,44034,50644,
 54384,74328,153161,354702,738966,1312380,1988814,
 2638668,3297933,4531980,7814811,15621794,30839391,
 55350396,88575614]

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Last modified April 18 04:56 EDT 2024. Contains 371767 sequences. (Running on oeis4.)