id:A062956 - OEIS Search Results

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H(n^2)-H(n), where H(n) is the half-totient function (A023022).

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2, 3, 8, 5, 18, 14, 24, 18, 50, 22, 72, 39, 56, 60, 128, 51, 162, 76, 120, 105, 242, 92, 240, 150, 234, 162, 392, 116, 450, 248, 320, 264, 408, 210, 648, 333, 456, 312, 800, 246, 882, 430, 528, 495, 1058, 376, 1008, 490, 800, 612, 1352, 477, 1080, 660, 1008 (list; graph; listen)

	OFFSET	`3,1`
	PROGRAM	`(PARI) H(n)=eulerphi(n)/2; j=[]; for(n=3, 200, j=concat(j, H(n^2)-H(n))); j`
	CROSSREFS	`(n-1)*A023022(n).` `Sequence in context: A095164 A075384 A072500 this_sequence A053650 A119794 A117987` `Adjacent sequences: A062953 A062954 A062955 this_sequence A062957 A062958 A062959`
	KEYWORD	`nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Jul 22 2001`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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