A213065 - OEIS

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A213065

a(n) = n^n! - n!^n.

0

-1, 0, 0, 513, 281474976378880, 752316384526264005099991383822237233803945956334136013765601092018187046026142190625

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OFFSET

0,4

COMMENTS

a(6) has 561 digits: 1.8573779... * 10^560.

LINKS

Table of n, a(n) for n=0..5.

MATHEMATICA

Table[n^n! - n!^n, {n, 0, 4}] (* T. D. Noe, Jun 04 2012 *)

PROG

(PARI) a(n) = n^n! - n!^n \\ Stefano Spezia, Aug 02 2025

CROSSREFS

Cf. A036740, A053986.

Sequence in context: A291507 A275099 A238615 * A045054 A386751 A301547

Adjacent sequences: A213062 A213063 A213064 * A213066 A213067 A213068

KEYWORD

sign

AUTHOR

Pratik Jain, Jun 04 2012

EXTENSIONS

a(5) from Stefano Spezia, Aug 02 2025

STATUS

approved