A132638 Numbers of the form m^m where m is oblong (promic).

4, 46656, 8916100448256, 104857600000000000000000000, 205891132094649000000000000000000000000000000, 150130937545296572356771972164254457814047970568738777235893533016064

Offset: 1

Author

Omar E. Pol, Aug 24 2007

Keywords

• easy
• nonn

Examples

			a(2)=46656 because we can write 46656=6^6 or 46656=6*6*6*6*6*6.
		

Crossrefs

Subsequence of A000312.

Oblong numbers: A002378

Cf. A008973, A008974, A051674.

Programs

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

Formula

a(n) = (n^2+n)^(n^2+n).

Extensions

New name and a(5)-a(6) from Charles R Greathouse IV, Mar 16 2022