id:A086711 - OEIS Search Results

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Primes p such that A001414(p-1) = A001414(p+1), where A001414 = sum of primes dividing n (with repetition).

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11, 17, 31, 251, 1429, 3041, 16561, 16927, 53299, 56897, 89783, 95089, 213599, 282977, 345547, 432587, 592223, 763457, 906949, 915799, 1050449, 1058389, 1485017, 1577341, 1678399, 1780253, 1855549, 2131687, 2374289, 2658259 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Conjecture: sequence is infinite.`
	EXAMPLE	`a(3)=31 because it is prime and 30=235, 32=2^5 and 2+3+5 = 2+2+2+2+2 = 10.`
	CROSSREFS	`Cf. A001414.` `Sequence in context: A060213 A073651 A142718 this_sequence A039514 A098797 A098649` `Adjacent sequences: A086708 A086709 A086710 this_sequence A086712 A086713 A086714`
	KEYWORD	`nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Jul 28 2003`

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.

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