A111404 f(f(n+1))-f(f(n)), where f(m) = 3^m.

24, 19656, 7625597465304, 443426488243037769948249622993552407816, 87189642485960958202911070585860771696964072404731750085525219437990967093722996516987306869061734867160436075772824

Offset

0,1

Links

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

Maple

f:=n->3^n; g:=n->f(f(n+1))-f(f(n)); [seq(g(n), n=0..4)]; # N. J. A. Sloane, Feb 14 2018

Crossrefs

Sequence in context: A145496 A279655 A067746 * A167066 A166338 A258874

Adjacent sequences: A111401 A111402 A111403 * A111405 A111406 A111407

Keyword

nonn

Author

N. J. A. Sloane, Nov 12 2005

Status

approved