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A254924 as a simple table

n a(n)
1 1
2 0
3 0
4 1
5 130
6 1329
7 1707670
8 27502484
9 209927657739
10 130904517147542068
11 3673771932850374193
12 69623451054783204822486486
13 3724616892817543661693877073170
14 149157913707716515940392007441860
15 12429106799179771738076359013310638297

[1,0,0,1,130,1329,1707670,27502484,209927657739,
 130904517147542068,3673771932850374193,
 69623451054783204822486486,
 3724616892817543661693877073170,
 149157913707716515940392007441860,
 12429106799179771738076359013310638297]

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Last modified April 23 02:14 EDT 2024. Contains 371906 sequences. (Running on oeis4.)