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A253448
as a simple table
n
a(n)
1
81
2
1975
3
7782
4
15730
5
44242
6
147332
7
526430
8
1956194
9
7444718
10
28766354
11
112273790
12
441202754
13
1742089358
[81,1975,7782,15730,44242,147332,526430,1956194, 7444718,28766354,112273790,441202754,1742089358]
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Last modified March 28 14:02 EDT 2024. Contains 371254 sequences. (Running on oeis4.)