A122231 Iterates of A122227, starting from A122227(4)=17.

4, 17, 64, 183, 560, 2036, 6397, 20414, 79204, 262714, 870210, 3640880

Offset

1,1

Links

Table of n, a(n) for n=1..12.

Prog

(Scheme) (define (A122231 n) (if (= 1 n) 4 (A122227 (A122231 (- n 1)))))

Crossrefs

Cf. A122232, A122233.

Sequence in context: A252815 A362593 A191272 * A119916 A209375 A005784

Adjacent sequences: A122228 A122229 A122230 * A122232 A122233 A122234

Keyword

nonn,more

Author

Antti Karttunen, Sep 14 2006

Status

approved