A088439 - OEIS

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A088439

a(3n) = 3n, otherwise a(n) = 1.

0, 1, 1, 3, 1, 1, 6, 1, 1, 9, 1, 1, 12, 1, 1, 15, 1, 1, 18, 1, 1, 21, 1, 1, 24, 1, 1, 27, 1, 1, 30, 1, 1, 33, 1, 1, 36, 1, 1, 39, 1, 1, 42, 1, 1, 45, 1, 1, 48, 1, 1, 51, 1, 1, 54, 1, 1, 57, 1, 1, 60, 1, 1, 63, 1, 1, 66, 1, 1, 69, 1, 1, 72, 1, 1, 75, 1, 1, 78, 1, 1, 81, 1, 1, 84, 1, 1, 87, 1, 1, 90, 1, 1 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	LINKS	`Index to sequences with linear recurrences with constant coefficients, signature (0,0,2,0,0,-1).`
	FORMULA	`Contribution from Bruno Berselli, Mar 11 2011: (Start)` `G.f.: x(1+x+3x^2-x^3-x^4)/(1-x^3)^2.` `a(n) = n^A079978(n).` `a(n) = 3*A175676(n-1)+A011655(n) for n>0. (End)`
	PROG	`(MAGMA) [n mod 3 eq 0 select n else 1: n in [0..92]]; // Bruno Berselli, Mar 11 2011`
	CROSSREFS	`Cf. A088140.` `Sequence in context: A195522 A069972 A115017 * A162315 A109446 A088441` `Adjacent sequences: A088436 A088437 A088438 * A088440 A088441 A088442`
	KEYWORD	`nonn`
	AUTHOR	`Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Nov 09 2003`

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Last modified February 14 13:08 EST 2012. Contains 205623 sequences.