id:A140730 - OEIS Search Results

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a(4*n)=5^n, a(4*n+1)=2*5^n, a(4*n+2)=3*5^n, a(4*n+3)=4*5^n.

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1, 2, 3, 4, 5, 10, 15, 20, 25, 50, 75, 100, 125, 250, 375, 500, 625, 1250, 1875, 2500, 3125, 6250, 9375, 12500, 15625, 31250, 46875, 62500, 78125, 156250, 234375, 312500, 390625, 781250, 1171875, 1562500, 1953125, 3906250, 5859375, 7812500 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`a(n) = A140740(n+4,4).`
	FORMULA	`a(n+1) = a(n) + a(n - n mod 4).` `O.g.f.: (1+2x+3x^2+4x^3)/(1-5x^4). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 31 2008`
	CROSSREFS	`Cf. A000079, A038754, A133464, A037124.` `Sequence in context: A032940 A064419 A032543 this_sequence A134220 A099161 A033077` `Adjacent sequences: A140727 A140728 A140729 this_sequence A140731 A140732 A140733`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 26 2008`

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Last modified November 27 14:13 EST 2009. Contains 167514 sequences.

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