id:A083235 - OEIS Search Results

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First differences of A063742, the possible values for cototients.

+0
2

1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; graph; listen)

	OFFSET	`1,10`
	COMMENT	`Differences between consecutive numbers in the range of A051853.`
	FORMULA	`a(n)=A063742[n+1]-A063742[n]`
	EXAMPLE	`First missing number in A063742 is 10=A005278[1], so a[10]=2 is the first difference here > 1.`
	MATHEMATICA	`t0[x_] := Table[j, {j, 1, x}] t=Table[w-EulerPhi[w], {w, 1, 10000}]; u=Union[%]; Delete[u-RotateRight[u], 1]`
	CROSSREFS	`Sequence in context: A062379 A043288 A057523 this_sequence A043287 A043286 A043285` `Adjacent sequences: A083232 A083233 A083234 this_sequence A083236 A083237 A083238`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), May 20 2003`
	EXTENSIONS	`Edited by njas at the suggestion of Andrew Plewe, Jun 23 2007`

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.

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