id:A054231 - OEIS Search Results

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Number of positive integers <= 2^n of form x^2 + 18 y^2.

+0
1

1, 1, 2, 2, 4, 9, 15, 28, 51, 94, 177, 329, 624, 1180, 2253, 4318, 8285, 15984, 30872, 59824, 116113, 225769, 439726, 857599, 1674693, 3274082, 6407312, 12550839, 24605967, 48277606, 94791459, 186243530, 366154704, 720274798, 1417642821 (list; graph; listen)

	OFFSET	`0,3`
	CROSSREFS	`Adjacent sequences: A054228 A054229 A054230 this_sequence A054232 A054233 A054234` `Sequence in context: A105152 A066346 A054233 this_sequence A054230 A054232 A100048`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.

AT&T Labs Research