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A122241 Iterates of A122237, starting from 4. 5
4, 22, 54, 169, 516, 1841, 6076, 19256, 66140, 252691, 888179, 2900616 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

PROG

(Scheme:) (define (A122241 n) (if (= 1 n) 4 (A122237 (A122241 (- n 1)))))

CROSSREFS

A122242.

Sequence in context: A187930 A022603 A050773 * A076525 A089761 A098837

Adjacent sequences:  A122238 A122239 A122240 * A122242 A122243 A122244

KEYWORD

nonn

AUTHOR

Antti Karttunen, Sep 14 2006

STATUS

approved

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Last modified November 18 12:21 EST 2017. Contains 294891 sequences.