id:A060847 - OEIS Search Results

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Difference between a nontrivial prime power (A025475) and the previous prime.

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1, 1, 2, 3, 2, 4, 1, 2, 3, 2, 8, 12, 1, 2, 2, 5, 6, 6, 2, 3, 6, 6, 2, 2, 8, 3, 4, 2, 12, 2, 9, 8, 18, 2, 2, 6, 4, 12, 2, 3, 6, 4, 2, 6, 12, 8, 2, 6, 2, 1, 6, 8, 2, 2, 14, 4, 6, 2, 6, 2, 3, 20, 2, 12, 2, 2, 8, 14, 10, 18, 8, 6, 2, 2, 2, 12, 12, 19, 2, 6, 6, 20, 2, 2, 2, 8, 8, 2, 2, 8, 20, 12, 15, 2, 4 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`a(n)=A025475(n)-prevprime[A025475(n)]=A025475(n)-A049711[A025475(n)]`
	EXAMPLE	`78125=5^7 follows 78121, the difference is 4. a(n)=1 only for some powers of 2.`
	CROSSREFS	`Cf. A025475, A000961, A001597, A001694, A007917, A007918, A013632, A013633, A049711.` `Sequence in context: A125767 A131580 A087038 this_sequence A079528 A143422 A071438` `Adjacent sequences: A060844 A060845 A060846 this_sequence A060848 A060849 A060850`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), May 03 2001`

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

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