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A187856 as a simple table

n a(n)
1 0
2 0
3 49536
4 7067600
5 71450504
6 288493336
7 741624088
8 1474319716
9 2497432760
10 3806665836
11 5395343360
12 7259273932
13 9396774760
14 11807403172
15 14491089616
16 17447829164
17 20677621816
18 24180467572
19 27956366432
20 32005318396
21 36327323464

[0,0,49536,7067600,71450504,288493336,741624088,
 1474319716,2497432760,3806665836,5395343360,
 7259273932,9396774760,11807403172,14491089616,
 17447829164,20677621816,24180467572,27956366432,
 32005318396,36327323464]

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Last modified June 1 19:09 EDT 2024. Contains 373027 sequences. (Running on oeis4.)