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A218840 as a simple table

n a(n)
1 21
2 438
3 9516
4 201960
5 4299802
6 91513161
7 1948262831
8 41475009100
9 882920599454
10 18795714385533
11 400125250527550
12 8517908622924528
13 181330147341356981
14 3860175542316616321
15 82175828913427711206
16 1749367816354069818496 

[21,438,9516,201960,4299802,91513161,1948262831,
 41475009100,882920599454,18795714385533,
 400125250527550,8517908622924528,
 181330147341356981,3860175542316616321,
 82175828913427711206,1749367816354069818496]

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Last modified May 14 07:57 EDT 2024. Contains 372530 sequences. (Running on oeis4.)