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A220721 as a simple table

n a(n)
1 1
2 21
3 230
4 2586
5 29310
6 331589
7 3751888
8 42452438
9 480346122
10 5435081884
11 61497557384
12 695840407309
13 7873383816355
14 89086767652576
15 1008010323915227
16 11405563810447637
17 129053128472692922
18 1460226802057078840

[1,21,230,2586,29310,331589,3751888,42452438,
 480346122,5435081884,61497557384,695840407309,
 7873383816355,89086767652576,1008010323915227,
 11405563810447637,129053128472692922,
 1460226802057078840]

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Last modified April 25 11:39 EDT 2024. Contains 371969 sequences. (Running on oeis4.)