id:A083220 - OEIS Search Results

Search: id:A083220

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a(n) = n + n mod 4.

+0
2

0, 2, 4, 6, 4, 6, 8, 10, 8, 10, 12, 14, 12, 14, 16, 18, 16, 18, 20, 22, 20, 22, 24, 26, 24, 26, 28, 30, 28, 30, 32, 34, 32, 34, 36, 38, 36, 38, 40, 42, 40, 42, 44, 46, 44, 46, 48, 50, 48, 50, 52, 54, 52, 54, 56, 58, 56, 58, 60, 62, 60, 62, 64, 66, 64, 66, 68, 70, 68, 70, 72, 74 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`a(n) = A083219(n)*2.`
	FORMULA	`a(n) = a(n-1) + 2(n mod 2 + (n mod 4 -1)(1- n mod 2)), a(0)=0.`
	CROSSREFS	`Adjacent sequences: A083217 A083218 A083219 this_sequence A083221 A083222 A083223` `Sequence in context: A018841 A138125 A098793 this_sequence A085896 A107701 A011176`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 22 2003`

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Last modified October 9 14:06 EDT 2008. Contains 144831 sequences.

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