id:A139388 - OEIS Search Results

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Nearest integer to (log(744+(12(n^2-1))^3)/Pi)^2.

+0
2

4, 12, 19, 25, 29, 33, 37, 40, 43, 46, 48, 51, 53, 55, 57, 59, 61, 62, 64, 65, 67, 68, 70, 71, 73, 74, 75, 76, 77, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 90, 91, 92, 93, 94, 95, 95, 96, 97, 98, 98, 99, 100, 101, 101, 102, 103, 103, 104, 105, 105, 106, 106, 107, 108 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`The well-known integers very close to e^(pi sqrt n) for n=A003173(m) are of the form (12(k^2-1))^3+744. This sequence gives the rounded n-value corresponding to a given k.`
	REFERENCES	`See A138852 for links, references and more information.`
	PROGRAM	`(PARI) A139388(n)=round(log(744+(12*(n^2-1))^3)/Pi)^2)`
	CROSSREFS	`Cf. A138851-A138852, A003173, A014708, A056581 and references therein.` `Sequence in context: A008120 A166162 A086109 this_sequence A008177 A009557 A050021` `Adjacent sequences: A139385 A139386 A139387 this_sequence A139389 A139390 A139391`
	KEYWORD	`nonn,easy`
	AUTHOR	`M. F. Hasler (Maximilian.Hasler(AT)gmail.com), Apr 17 2008`

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

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