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A240040 as a simple table

n a(n)
1 2
2 4
3 26
4 346
5 7514
6 640643
7 104619164
8 49892724623

[2,4,26,346,7514,640643,104619164,49892724623]

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Last modified May 20 11:16 EDT 2022. Contains 353871 sequences. (Running on oeis4.)