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A076951 as a simple table

n a(n)
1 1
2 1
3 3
4 0
5 205
6 0
7 39991
8 0
9 57
10 5905
11 9090909091
12 0
13 8230246567621
14 0
15 10371206370520815
16 0
17 17361641481138401521
18 0
19 37275544492386193492507
20 0
21 22706531343006
22 0
23 326583187044036098379401213863
24 0
25 45035996273705

[1,1,3,0,205,0,39991,0,57,5905,9090909091,0,
 8230246567621,0,10371206370520815,0,
 17361641481138401521,0,37275544492386193492507,0,
 22706531343006,0,326583187044036098379401213863,0,
 45035996273705]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)