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A306139 as a simple table

n a(n)
1 2
2 86
3 521
4 4691
5 40610
6 339596
7 2880944
8 24495738
9 207439044
10 1759248608
11 14920713212
12 126511580214
13 1072799000264
14 9097203457581
15 77141534654160
16 654142510659999
17 5546978690001491
18 47037035425953583
19 398862931229311745

[2,86,521,4691,40610,339596,2880944,24495738,
 207439044,1759248608,14920713212,126511580214,
 1072799000264,9097203457581,77141534654160,
 654142510659999,5546978690001491,
 47037035425953583,398862931229311745]

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)