id:A054173 - OEIS Search Results

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Number of positive integers <= 2^n of form 4 x^2 + 9 y^2.

+0
1

0, 0, 1, 1, 4, 5, 10, 18, 35, 65, 120, 225, 430, 814, 1549, 2981, 5739, 11084, 21474, 41663, 81033, 157830, 307912, 601482, 1176314, 2302911, 4513106, 8851907, 17376317, 34134944, 67101922, 131990741, 259779732, 511566355, 1007901666 (list; graph; listen)

	OFFSET	`0,5`
	LINKS	`Index entries for sequences related to populations of quadratic forms`
	CROSSREFS	`Adjacent sequences: A054170 A054171 A054172 this_sequence A054174 A054175 A054176` `Sequence in context: A022309 A049897 A049867 this_sequence A049898 A166577 A109675`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified November 8 20:39 EST 2009. Contains 166234 sequences.

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