id:A049092 - OEIS Search Results

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Primes p such that p-1 is not square-free.

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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; listen)

	OFFSET	`1,1`
	COMMENT	`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: A050598 A088908 A092218 this_sequence A103666 A082700 A077425` `Adjacent sequences: A049089 A049090 A049091 this_sequence A049093 A049094 A049095`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu)`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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