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A227179 After initial 0, integers from 0 to n(n-1) followed by integers from 0 to n(n+1) and so on. 5
0, 0, 0, 1, 2, 0, 1, 2, 3, 4, 5, 6, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..9951

FORMULA

a(n) = n - (1 + A006527(A227177(n)-1)).

MATHEMATICA

Flatten[(Range[(#-2) (#-1)+1]-1&)[Range[7]]] (* Peter J. C. Moses, Jul 11 2013 *)

PROG

(Scheme): (define (A227179 n) (- n (+ 1 (A006527 (- (A227177 n) 1)))))

CROSSREFS

Cf. A002378, A006527, A227177, A227181, A227182.

Sequence in context: A262678 A238794 A135317 * A115218 A023858 A011118

Adjacent sequences:  A227176 A227177 A227178 * A227180 A227181 A227182

KEYWORD

nonn

AUTHOR

Antti Karttunen, Jul 03 2013

STATUS

approved

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Last modified June 25 12:01 EDT 2019. Contains 324352 sequences. (Running on oeis4.)