id:A098141 - OEIS Search Results

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a(1)=1, then if n not a square a(n)=a(n-1) + n, if n a square then a(n)= a(n-1) - n.

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1, 3, 6, 2, 7, 13, 20, 28, 19, 29, 40, 52, 65, 79, 94, 78, 95, 113, 132, 152, 173, 195, 218, 242, 217, 243, 270, 298, 327, 357, 388, 420, 453, 487, 522, 486, 523, 561, 600, 640, 681, 723, 766, 810, 855, 901, 948, 996, 947, 997, 1048, 1100, 1153, 1207, 1262, 1318 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`a(1)=1` `As 2 not a square a(2)=1+2=3` `As 3 not a square a(3)=3+3=6` `As 4 is a square a(4)=6-4=2`
	CROSSREFS	`Sequence in context: A064389 A118201 A113880 this_sequence A135598 A099506 A154204` `Adjacent sequences: A098138 A098139 A098140 this_sequence A098142 A098143 A098144`
	KEYWORD	`easy,nonn`
	AUTHOR	`Pierre CAMI (pierrecami(AT)tele2.fr), Sep 28 2004`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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