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A116648 Least natural number which does not occur in A116626(1..n). 5
2, 2, 4, 4, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7, 9, 9, 11, 11, 11, 11, 11, 11, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 21, 21, 21, 21, 27, 27, 27, 27, 27, 27, 27, 27, 29, 29, 29, 29, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 39, 39, 39, 39, 42, 42, 42, 42, 44, 44, 44, 44 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..74.

PROG

(MIT Scheme:) (define (A116648 n) (if (< n 2) (+ n 1) (let ((prev (A116648 (- n 1)))) (cond ((not (= (A116626 n) prev)) prev) (else (let loop ((i (+ 1 prev))) (cond ((> (A116627 i) n) i) (else (loop (+ 1 i))))))))))

CROSSREFS

Cf. A116649, A116650, A116651.

Sequence in context: A123756 A300755 A307825 * A152850 A036714 A319398

Adjacent sequences:  A116645 A116646 A116647 * A116649 A116650 A116651

KEYWORD

nonn

AUTHOR

Antti Karttunen, Feb 21 2006

STATUS

approved

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Last modified October 22 00:52 EDT 2019. Contains 328315 sequences. (Running on oeis4.)