id:A152955 - OEIS Search Results

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Odd squarefree numbers n such that the cyclotomic polynomial Phi(n,x) has height 1.

+0
7

1, 3, 5, 7, 11, 13, 15, 17, 19, 21, 23, 29, 31, 33, 35, 37, 39, 41, 43, 47, 51, 53, 55, 57, 59, 61, 65, 67, 69, 71, 73, 77, 79, 83, 85, 87, 89, 91, 93, 95, 97, 101, 103, 107, 109, 111, 113, 115, 119, 123, 127, 129, 131, 133, 137, 139, 141, 143, 145, 149, 151, 155, 157 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`The height of a polynomial is the maximum of the absolute value of its coefficients. Polynomials of height 1 are also called flat polynomials. This sequence includes prime (first order) and semiprime (second order) n, as well as third-order (A117223), fourth-order (A117318) and higher-order n.`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1000`
	CROSSREFS	`A152940, A152941, A152942, A152943` `Sequence in context: A100933 A088828 A056911 this_sequence A155113 A103796 A062086` `Adjacent sequences: A152952 A152953 A152954 this_sequence A152956 A152957 A152958`
	KEYWORD	`nonn`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), Dec 16 2008`

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

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