A122228 Iterates of A122227, starting from 0.

0, 1, 3, 8, 20, 55, 160, 493, 1579, 5212, 17595, 60462, 210749, 743284, 2647461, 9509504

Offset

0,3

Links

Table of n, a(n) for n=0..15.

Prog

(Scheme:) (define (A122228 n) (if (zero? n) 0 (A122227 (A122228 (- n 1)))))

Crossrefs

Cf. A122229, A122230, A106191.

Sequence in context: A026995 A018035 A271843 * A018790 A268042 A009436

Adjacent sequences: A122225 A122226 A122227 * A122229 A122230 A122231

Keyword

nonn

Author

Antti Karttunen, Sep 14 2006

Status

approved