id:A054164 - OEIS Search Results

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Number of positive integers <= 2^n of form 3 x^2 + 7 y^2.

+0
1

0, 0, 1, 2, 4, 8, 13, 24, 44, 79, 147, 275, 516, 976, 1859, 3552, 6810, 13102, 25281, 48908, 94819, 184144, 358279, 698183, 1362298, 2661409, 5204770, 10189097, 19964562, 39151220, 76835090, 150897513, 296542636, 583115721, 1147276480 (list; graph; listen)

	OFFSET	`0,4`
	LINKS	`Index entries for sequences related to populations of quadratic forms`
	CROSSREFS	`Sequence in context: A018066 A096573 A000077 this_sequence A102704 A043774 A043777` `Adjacent sequences: A054161 A054162 A054163 this_sequence A054165 A054166 A054167`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

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