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A152245
Primes p where |p-m| = 1, where m is any of the smallest positive integers with their number of divisors. (m belongs to sequence A007416.)
1
2, 3, 5, 7, 11, 13, 17, 23, 37, 47, 59, 61, 179, 181, 191, 193, 239, 241, 359, 577, 719, 839, 1259, 1297, 2521, 2879, 5039, 6299, 6301, 6481, 6719, 7559, 7561, 10079, 12289, 14401, 15121, 15359, 15361, 20161, 25919, 32401, 44101, 45361, 55439, 55441
OFFSET
1,1
EXAMPLE
The smallest positive integer with 8 divisors is 24. 24 - 1 = 23 is prime. But 24 + 1 = 25 is composite. So 23 is in the sequence, while 25 is not.
CROSSREFS
KEYWORD
nonn
AUTHOR
Leroy Quet, Nov 30 2008
EXTENSIONS
Extended by Ray Chandler, Dec 05 2008
STATUS
approved