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A240194 as a simple table

n a(n)
1 4
2 27
3 138
4 771
5 5240
6 40765
7 336257
8 2843914
9 24331713
10 209365217
11 1806459338
12 15606899530
13 134920604706
14 1166738652794
15 10090988027354
16 87282067470301
17 754973088693125
18 6530482231898003
19 56488830699787694
20 488631696598081278

[4,27,138,771,5240,40765,336257,2843914,24331713,
 209365217,1806459338,15606899530,134920604706,
 1166738652794,10090988027354,87282067470301,
 754973088693125,6530482231898003,
 56488830699787694,488631696598081278]

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Last modified April 26 12:36 EDT 2024. Contains 371997 sequences. (Running on oeis4.)