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 A235043 Partial sums of the characteristic function of A091209. 6
 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,18 COMMENTS Note that this also works as an inverse function of A091209 in a sense that a(A091209(n)) = n for all n>=1. LINKS Antti Karttunen, Table of n, a(n) for n = 0..10007 PROG (Scheme) (define (A235043 n) (if (zero? n) n (+ (A235043 (- n 1)) (+ (* (A010051 n) (A091247 n)))))) CROSSREFS Used to compute A235041. Cf. A010051, A091247, A235044. Sequence in context: A067099 A098429 A132090 * A071538 A321017 A138194 Adjacent sequences: A235040 A235041 A235042 * A235044 A235045 A235046 KEYWORD nonn AUTHOR Antti Karttunen, Jan 02 2014 STATUS approved

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Last modified September 7 05:42 EDT 2024. Contains 375729 sequences. (Running on oeis4.)