id:A049231 - OEIS Search Results

Search: id:A049231

Displaying 1-1 of 1 results found.

page 1

Numbers n such that p_n - 2 is square-free, where p_n is the n-th prime.

+0
2

3, 5, 7, 13, 17, 19, 23, 31, 37, 41, 43, 53, 59, 61, 67, 71, 73, 79, 89, 97, 103, 107, 109, 113, 131, 139, 151, 157, 163, 167, 179, 181, 193, 197, 199, 211, 223, 229, 233, 239, 241, 251, 257, 269, 271, 283, 293, 307, 311, 313, 331, 337, 347, 349, 359, 367, 373 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`Abs[ mu[ Prime[ k ]-2 ]=1`
	CROSSREFS	`Sequence in context: A023208 A162358 A154320 this_sequence A092195 A046066 A045398` `Adjacent sequences: A049228 A049229 A049230 this_sequence A049232 A049233 A049234`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu)`

page 1

Search completed in 0.002 seconds

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

AT&T Labs Research