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Iterates of A122227, starting from A122227(4)=17.
3

%I #2 Mar 31 2012 13:21:11

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

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

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

%Y Cf. A122232, A122233.

%K nonn

%O 1,1

%A _Antti Karttunen_, Sep 14 2006