A218271 a(n) = a(n-1)^a(n-2) + a(n-3) with a(0) = a(1) = a(2) = 1.

1, 1, 1, 2, 3, 10, 1002, 1020180963368077455371525121027

Offset

0,4

Comments

a(8) has over 30000 digits.

Links

Table of n, a(n) for n=0..7.

Example

a(3) = a(2)^a(1) + a(0) = 1^1+1 = 1+1 = 2.

Mathematica

t = {1, 1, 1}; Do[AppendTo[t, t[[-1]]^t[[-2]] + t[[-3]]], {5}]; t (* T. D. Noe, Oct 29 2012 *)

Crossrefs

Cf. A184163, A218270, A218122.

Sequence in context: A270442 A330581 A184163 * A128125 A351775 A070239

Adjacent sequences: A218268 A218269 A218270 * A218272 A218273 A218274

Keyword

nonn

Author

Nico Brown, Oct 24 2012

Status

approved