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A153028 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 7
5 31
6 361
7 3361
8 57121
9 873937
10 20110861
11 446072221
12 13230551071
13 394398451591
14 14556740314117
15 554429787469741
16 24799106347186081

[1,1,1,1,7,31,361,3361,57121,873937,20110861,
 446072221,13230551071,394398451591,14556740314117,
 554429787469741,24799106347186081]

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Last modified April 23 18:16 EDT 2024. Contains 371916 sequences. (Running on oeis4.)