id:A054180 - OEIS Search Results

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Number of positive integers <= 2^n of form 5 x^2 + 10 y^2.

+0
1

0, 0, 0, 1, 3, 5, 9, 16, 29, 52, 93, 169, 315, 591, 1119, 2124, 4052, 7763, 14922, 28781, 55629, 107775, 209241, 406916, 792579, 1545812, 3018687, 5901609, 11549484, 22623452, 44352970, 87021370, 170860941, 335698520, 659971004, 1298228239 (list; graph; listen)

	OFFSET	`0,5`
	LINKS	`Index entries for sequences related to populations of quadratic forms`
	CROSSREFS	`Sequence in context: A018159 A094980 A069818 this_sequence A135575 A130114 A032679` `Adjacent sequences: A054177 A054178 A054179 this_sequence A054181 A054182 A054183`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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