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A320977 as a simple table

n a(n)
3 0
4 1
5 4
6 57
7 311
8 3857
9 27589
10 355751
11 3185258
12 44435241
13 479927081
14 7311147055
15 92603527295
16 1540826943617
17 22398016781688
18 405865410503155
19 6658173453910401
20 130871330990044897
21 2390845313044048301
22 50759828657781860167
23 1021623022236754343662

[0,1,4,57,311,3857,27589,355751,3185258,44435241,
 479927081,7311147055,92603527295,1540826943617,
 22398016781688,405865410503155,6658173453910401,
 130871330990044897,2390845313044048301,
 50759828657781860167,1021623022236754343662]

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Last modified April 19 09:23 EDT 2024. Contains 371782 sequences. (Running on oeis4.)