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A244989 Partial sums of A244992: a(1) = 0, and for n >= 1, a(n) = A244992(n) + a(n-1); Inverse function for A244991. 5
0, 1, 1, 2, 3, 3, 3, 4, 4, 5, 6, 6, 6, 6, 7, 8, 9, 9, 9, 10, 10, 11, 12, 12, 13, 13, 13, 13, 13, 14, 15, 16, 17, 18, 18, 18, 18, 18, 18, 19, 20, 20, 20, 21, 22, 23, 24, 24, 24, 25, 26, 26, 26, 26, 27, 27, 27, 27, 28, 29, 29, 30, 30, 31, 31, 32, 33, 34, 35, 35, 35, 35, 36, 36, 37 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..10001

FORMULA

a(1) = 0, and for n >= 1, a(n) = A244992(n) + a(n-1).

a(n) = n - A244988(n).

For all n >= 1, a(A244991(n)) = n. [This works as an inverse function for the injection A244991].

PROG

(definec (A244989 n) (if (<= n 1) 0 (+ (A244992 n) (A244989 (-1+ n)))))

CROSSREFS

Cf. A244988, A244991, A244992, A244321.

Sequence in context: A218447 A305845 A120565 * A296021 A267097 A194198

Adjacent sequences:  A244986 A244987 A244988 * A244990 A244991 A244992

KEYWORD

nonn

AUTHOR

Antti Karttunen, Jul 22 2014

STATUS

approved

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Last modified October 17 01:03 EDT 2019. Contains 328103 sequences. (Running on oeis4.)