A049092 - OEIS

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A049092

Primes p such that p-1 is not squarefree.

5, 13, 17, 19, 29, 37, 41, 53, 61, 73, 89, 97, 101, 109, 113, 127, 137, 149, 151, 157, 163, 173, 181, 193, 197, 199, 229, 233, 241, 251, 257, 269, 271, 277, 281, 293, 307, 313, 317, 337, 349, 353, 373, 379, 389, 397, 401, 409, 421, 433, 449, 457, 461, 487 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`Primes p with mu(p-1)=0, where mu is the Moebius function. - T. D. Noe (noe(AT)sspectra.com), Nov 03 2003`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1000` `Eric Weisstein's World of Mathematics, Moebius Function`
	EXAMPLE	`p=257 is here because p-1=256=2^8 or p=997 is here because p-1=996=3(2^2)83`
	MATHEMATICA	`Select[Prime[Range[400]], MoebiusMu[ #-1]==0&]`
	CROSSREFS	`Cf. A078330 (primes p with mu(p-1)=-1), A088179 (primes p such that mu(p-1)=1), A089451 (mu(p-1) for prime p).` `Sequence in context: A088908 A168486 A092218 * A103666 A082700 A166409` `Adjacent sequences: A049089 A049090 A049091 * A049093 A049094 A049095`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu)`

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Last modified February 14 22:22 EST 2012. Contains 205678 sequences.