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A115031 a(n) = a(n-1)^a(n-1) - a(n-2)^a(n-2) with a(0)=1 and a(1)=2. 0
1, 2, 3, 23, 20880467999847912034355032910540 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

a(6) is too large to include.

LINKS

Table of n, a(n) for n=0..4.

EXAMPLE

23^23 - 3^3 = 20880467999847912034355032910540.

MATHEMATICA

a[0] := 1; a[1] := 2; a[n_] := a[n] = a[n - 1]^a[n - 1] - a[n - 2]^a[n - 2]; Table[Floor[a[n]], {n, 0, 4}] (* G. C. Greubel, Dec 20 2017 *)

CROSSREFS

Sequence in context: A260420 A241661 A260071 * A030418 A329456 A037277

Adjacent sequences:  A115028 A115029 A115030 * A115032 A115033 A115034

KEYWORD

easy,nonn

AUTHOR

Giovanni Teofilatto, Feb 26 2006

EXTENSIONS

Definition corrected and example added by N. J. A. Sloane, Jun 09 2017

STATUS

approved

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Last modified April 21 03:33 EDT 2021. Contains 343145 sequences. (Running on oeis4.)