id:A054166 - OEIS Search Results

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Number of positive integers <= 2^n of form 3 x^2 + 9 y^2.

+0
1

0, 0, 1, 1, 3, 5, 10, 17, 32, 56, 106, 195, 365, 691, 1308, 2495, 4773, 9174, 17671, 34144, 66131, 128330, 249482, 485761, 947206, 1849299, 3614605, 7072464, 13851148, 27150649, 53262111, 104562496, 205412762, 403786919, 794202162 (list; graph; listen)

	OFFSET	`0,5`
	LINKS	`Index entries for sequences related to populations of quadratic forms`
	CROSSREFS	`Sequence in context: A005403 A018072 A090170 this_sequence A054157 A026621 A096395` `Adjacent sequences: A054163 A054164 A054165 this_sequence A054167 A054168 A054169`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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