id:A054153 - OEIS Search Results

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Number of positive integers <= 2^n of form x^2 + 9 y^2.

+0
1

1, 1, 2, 2, 6, 8, 18, 30, 57, 103, 194, 360, 682, 1292, 2464, 4721, 9078, 17481, 33808, 65485, 127116, 247179, 481426, 938950, 1833572, 3584679, 7015237, 13741715, 26940645, 52858250, 103785060, 203913141, 400891200, 788601863, 1552114600 (list; graph; listen)

	OFFSET	`0,3`
	LINKS	`Index entries for sequences related to populations of quadratic forms`
	CROSSREFS	`Sequence in context: A033736 A033760 A136513 this_sequence A000673 A129383 A052957` `Adjacent sequences: A054150 A054151 A054152 this_sequence A054154 A054155 A054156`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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