id:A054159 - OEIS Search Results

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

+0
1

0, 1, 1, 2, 4, 8, 15, 27, 51, 93, 174, 329, 620, 1177, 2250, 4308, 8286, 15961, 30871, 59792, 116083, 225754, 439666, 857554, 1674630, 3273944, 6407147, 12550615, 24605525, 48277287, 94790704, 186242926, 366153007, 720274117, 1417640576 (list; graph; listen)

	OFFSET	`0,4`
	LINKS	`Index entries for sequences related to populations of quadratic forms`
	CROSSREFS	`Sequence in context: A098057 A074029 A138653 this_sequence A056181 A101976 A036615` `Adjacent sequences: A054156 A054157 A054158 this_sequence A054160 A054161 A054162`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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