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A086711 Primes p such that A001414(p-1) = A001414(p+1), where A001414 = sum of primes dividing n (with repetition). 8
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; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Conjecture: sequence is infinite.
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..1280
EXAMPLE
a(3)=31 because it is prime and 30=2*3*5, 32=2^5 and 2+3+5 = 2+2+2+2+2 = 10.
CROSSREFS
Sequence in context: A127703 A165667 A339180 * A039514 A098797 A271999
KEYWORD
nonn
AUTHOR
Jason Earls, Jul 28 2003
STATUS
approved

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)