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URL: https://oeis.org/A276792

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A276792
First differences of A003146.
3
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
OFFSET
1,1
LINKS
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, Electronic J. Combin., 27:1 (2020), #P1.52.
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
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Oct 27 2016
STATUS
approved