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URL: https://oeis.org/A132638

⇱ A132638 - OEIS

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A132638
Numbers of the form m^m where m is oblong (promic).
0
4, 46656, 8916100448256, 104857600000000000000000000, 205891132094649000000000000000000000000000000, 150130937545296572356771972164254457814047970568738777235893533016064
OFFSET
1,1
FORMULA
a(n) = (n^2+n)^(n^2+n).
EXAMPLE
a(2)=46656 because we can write 46656=6^6 or 46656=6*6*6*6*6*6.
PROG
(PARI) a(n)=(n^2+n)^(n^2+n) \\ Charles R Greathouse IV, Mar 16 2022
(PARI) a(n)=(n*=n+1)^n \\ Charles R Greathouse IV, Mar 16 2022
CROSSREFS
Subsequence of A000312.
Oblong numbers: A002378
Sequence in context: A259160 A173138 A275587 * A046882 A165812 A218405
KEYWORD
easy,nonn
AUTHOR
Omar E. Pol, Aug 24 2007
EXTENSIONS
New name and a(5)-a(6) from Charles R Greathouse IV, Mar 16 2022
STATUS
approved