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A276792 First differences of A003146. 2
7, 6, 7, 4, 7, 6, 7, 7, 6, 7, 4, 7, 6, 7, 6, 7, 4, 7, 6, 7, 7, 6, 7, 4, 7, 6, 7, 4, 7, 6, 7, 7, 6, 7, 4, 7, 6, 7, 6, 7, 4, 7, 6, 7, 7, 6, 7, 4, 7, 6, 7, 7, 6, 7, 4, 7, 6, 7, 6, 7, 4, 7, 6, 7, 7, 6, 7, 4, 7, 6, 7, 4, 7, 6, 7, 7, 6, 7, 4, 7, 6, 7, 6, 7, 4, 7, 6, 7, 7, 6, 7, 4, 7, 6, 7, 6, 7, 4, 7 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Rémy Sigrist, Table of n, a(n) for n = 1..10608

Elena Barcucci, Luc Belanger and Srecko Brlek, On tribonacci sequences, Fib. Q., 42 (2004), 314-320. See page 317.

F. Michel Dekking, Jeffrey Shallit, and N. J. A. Sloane, Queens in exile: non-attacking queens on infinite chess boards, arXiv:1907.09120, July 2019

FORMULA

a(n) = A003146(n+1) - A003146(n), for n >= 1.

a(n) = A276788(n) + A276789(n) + 1, for n >= 1.

a(n+1) = 7 - t(n)*(t(n) + 1)/2, n >= 0, where t(n) = A080843(n). - Wolfdieter Lang, Dec 06 2018

CROSSREFS

Cf. A003144, A003145, A003146, A080843, A276788, A276789.

Sequence in context: A239341 A239606 A291423 * A188943 A093349 A309641

Adjacent sequences:  A276789 A276790 A276791 * A276793 A276794 A276795

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Oct 27 2016

STATUS

approved

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Last modified August 26 05:23 EDT 2019. Contains 326328 sequences. (Running on oeis4.)