A133265 - OEIS

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A133265

Diagonal of the A135356 triangle.

2, 2, 2, 4, 2, 6, 2, 8, 2, 10, 2, 12, 2, 14, 2, 16, 2, 18, 2, 20, 2, 22, 2, 24, 2, 26, 2, 28, 2, 30, 2, 32, 2, 34, 2, 36, 2, 38, 2, 40, 2, 42, 2, 44, 2, 46, 2, 48, 2, 50, 2, 52, 2, 54, 2, 56, 2, 58, 2, 60, 2, 62, 2, 64, 2, 66, 2, 68, 2, 70, 2, 72, 2, 74, 2, 76, 2, 78, 2, 80 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	LINKS	`Vincenzo Librandi, Table of n, a(n) for n = 0..1000`
	FORMULA	`2(A057979 without 1, 0, first two terms).` `a(n) = (n+3+(n-1)(-1)^(n+1))/2; [From Vincenzo Librandi, Aug 30 2011]`
	MAPLE	`A133265 := n -> (n+2+(n-2)(-1)^n)/2: # Peter Luschny, Aug 30 2011` `(MAGMA) [(n+3+(n-1)(-1)^(n+1))/2: n in [0..80]]; // Vincenzo Librandi, Aug 30 2011`
	CROSSREFS	`Sequence in context: A135838 A114349 A086087 * A054712 A066243 A035580` `Adjacent sequences: A133262 A133263 A133264 * A133266 A133267 A133268`
	KEYWORD	`nonn`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Dec 20 2007`

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Last modified February 18 00:14 EST 2012. Contains 206085 sequences.