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A023937 as a simple table

n a(n)
0 1
1 0
2 1422
3 13056
4 84024
5 285696
6 958422
7 2131200
8 5413374
9 9655296
10 20529216
11 32221440
12 61570992
13 87542784
14 154925820
15 206952192
16 345543480
17 439022592
18 698892510
19 853288704
20 1321785360
21 1557921792
22 2326595904
23 2692744704
24 3941172102
25 4428518400
26 6356272428

[1,0,1422,13056,84024,285696,958422,2131200,
 5413374,9655296,20529216,32221440,61570992,
 87542784,154925820,206952192,345543480,439022592,
 698892510,853288704,1321785360,1557921792,
 2326595904,2692744704,3941172102,4428518400,
 6356272428]

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Last modified May 28 12:54 EDT 2024. Contains 372913 sequences. (Running on oeis4.)