id:A097987 - OEIS Search Results

Search: id:A097987

Displaying 1-1 of 1 results found.

page 1

Numbers n such that 4 does not divide phi(n), where phi is the Euler's totient (A000010);.

+0
2

1, 2, 3, 4, 6, 7, 9, 11, 14, 18, 19, 22, 23, 27, 31, 38, 43, 46, 47, 49, 54, 59, 62, 67, 71, 79, 81, 83, 86, 94, 98, 103, 107, 118, 121, 127, 131, 134, 139, 142, 151, 158, 162, 163, 166, 167, 179, 191, 199, 206, 211, 214, 223, 227, 239, 242, 243, 251, 254, 262, 263, 271 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n)=1, 2, 4, p^k, 2*p^k, with prime p == 3 (mod 4).`
	CROSSREFS	`Essentially the same as A066499.` `Adjacent sequences: A097984 A097985 A097986 this_sequence A097988 A097989 A097990` `Sequence in context: A047872 A015851 A065156 this_sequence A049149 A018629 A018357`
	KEYWORD	`nonn`
	AUTHOR	`Lekraj Beedassy (blekraj(AT)yahoo.com), Sep 07 2004`
	EXTENSIONS	`Corrected and extended by Vladeta Jovovic (vladeta(AT)Eunet.yu), Sep 08 2004`

page 1

Search completed in 0.002 seconds

Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

AT&T Labs Research