id:A085035 - OEIS Search Results

Search: id:A085035

Displaying 1-1 of 1 results found.

page 1

Number of prime factors of cyclotomic(n,10), which is A019328(n), the value of the n-th cyclotomic polynomial evaluated at x=10.

+0
2

2, 1, 2, 1, 2, 2, 2, 2, 2, 1, 2, 1, 3, 1, 2, 2, 2, 2, 1, 2, 3, 4, 1, 1, 3, 2, 3, 3, 5, 3, 3, 5, 2, 3, 3, 1, 3, 1, 1, 2, 4, 4, 4, 3, 2, 4, 2, 1, 2, 3, 4, 2, 4, 2, 4, 2, 3, 2, 2, 3, 7, 1, 5, 4, 2, 2, 3, 3, 3, 2, 2, 3, 3, 3, 3, 2, 4, 5, 6, 2, 6, 2, 3, 2, 3, 3, 3 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`The Mobius transform of this sequence yields A057951, number of prime factors of 10^n-1.`
	REFERENCES	`See references at A085021`
	MATHEMATICA	`Table[Plus@@Transpose[FactorInteger[Cyclotomic[n, 10]]][[2]], {n, 1, 100}]`
	CROSSREFS	`Cf. A019328, A057951, A085021.` `Adjacent sequences: A085032 A085033 A085034 this_sequence A085036 A085037 A085038` `Sequence in context: A115751 A048684 A109969 this_sequence A083023 A084359 A143935`
	KEYWORD	`nonn`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), Jun 19 2003`

page 1

Search completed in 0.002 seconds

Last modified October 9 14:06 EDT 2008. Contains 144831 sequences.

AT&T Labs Research