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A271985 as a simple table

n a(n)
3 0
4 253
5 4382
6 885775
7 150051213
8 570623341475
9 855935016215
10 1426559238830
11 1997331745490
12 3138428376974
13 3138428381103
14 3138429262496
15 3138578427934 

[0,253,4382,885775,150051213,570623341475,
 855935016215,1426559238830,1997331745490,
 3138428376974,3138428381103,3138429262496,
 3138578427934]

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Last modified April 24 17:29 EDT 2024. Contains 371962 sequences. (Running on oeis4.)