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A025982 as a simple table

n a(n)
0 1
1 27
2 487
3 7431
4 103951
5 1382439
6 17812639
7 224794647
8 2797053391
9 34460823111
10 421597615231
11 5131789410423
12 62235068724271
13 752703321093543
14 9085382857597663
15 109501083478899159
16 1318301413026203791

[1,27,487,7431,103951,1382439,17812639,224794647,
 2797053391,34460823111,421597615231,5131789410423,
 62235068724271,752703321093543,9085382857597663,
 109501083478899159,1318301413026203791]

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Last modified October 3 17:09 EDT 2022. Contains 357237 sequences. (Running on oeis4.)