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A166021 a(n) = 2*A000124(A003056(n-1)) if A002262(n-1)=0, otherwise a(n-1)+1. 2
2, 4, 5, 8, 9, 10, 14, 15, 16, 17, 22, 23, 24, 25, 26, 32, 33, 34, 35, 36, 37, 44, 45, 46, 47, 48, 49, 50, 58, 59, 60, 61, 62, 63, 64, 65, 74, 75, 76, 77, 78, 79, 80, 81, 82, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..65.

PROG

(MIT Scheme:) (define (A166021 n) (if (zero? (A002262 (-1+ n))) (* 2 (A000124 (A003056 (-1+ n)))) (1+ (A166021 (-1+ n)))))

CROSSREFS

Complement of A136272.

Sequence in context: A101185 A045702 A005658 * A279430 A003714 A010402

Adjacent sequences:  A166018 A166019 A166020 * A166022 A166023 A166024

KEYWORD

nonn,tabl,easy

AUTHOR

Antti Karttunen, Oct 05 2009

STATUS

approved

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Last modified October 23 18:36 EDT 2018. Contains 316529 sequences. (Running on oeis4.)