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A131552
as a simple table
n
a(n)
1
4
2
19
3
93
4
334
5
841
6
3404
7
7271
8
7720
9
44152
10
406774
11
993948
12
2421339
13
8786439
14
11387707
15
93548200
[4,19,93,334,841,3404,7271,7720,44152,406774, 993948,2421339,8786439,11387707,93548200]
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Last modified September 17 19:36 EDT 2024. Contains 375990 sequences. (Running on oeis4.)