A235044 - OEIS

A235044

Partial sums of the characteristic function of A091214.

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,56

COMMENTS

Note that this also works as an inverse function of A091214 in a sense that a(A091214(n)) = n for all n>=1.

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..4119

PROG

(Scheme) (definec (A235044 n) (if (zero? n) n (+ (A235044 (- n 1)) (+ (* (A066247 n) (A091225 n))))))

CROSSREFS

Used to compute A235042. Cf. A066247, A091225, A235043.

Sequence in context: A343356 A242253 A071839 * A163857 A185715 A111893

Adjacent sequences: A235041 A235042 A235043 * A235045 A235046 A235047

KEYWORD

nonn

AUTHOR

Antti Karttunen, Jan 02 2014

STATUS

approved