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A020500

Cyclotomic polynomials at x=1.

+0
11

0, 2, 3, 2, 5, 1, 7, 2, 3, 1, 11, 1, 13, 1, 1, 2, 17, 1, 19, 1, 1, 1, 23, 1, 5, 1, 3, 1, 29, 1, 31, 2, 1, 1, 1, 1, 37, 1, 1, 1, 41, 1, 43, 1, 1, 1, 47, 1, 7, 1, 1, 1, 53, 1, 1, 1, 1, 1, 59, 1, 61, 1, 1, 2, 1, 1, 67, 1, 1, 1, 71, 1, 73 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..10000` `Index entries for cyclotomic polynomials, values at X`
	MAPLE	`with(numtheory, cyclotomic); f := n->subs(x=1, cyclotomic(n, x)); seq(f(i), i=0..64);`
	CROSSREFS	`Apart from initial zero, same as A014963.` `Sequence in context: A092509 A014973 A157753 this_sequence A014963 A099636 A099635` `Adjacent sequences: A020497 A020498 A020499 this_sequence A020501 A020502 A020503`
	KEYWORD	`nonn,easy,nice`
	AUTHOR	`Simon Plouffe (simon.plouffe(AT)gmail.com)`

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Last modified November 22 20:51 EST 2009. Contains 167312 sequences.

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