[seqfan] smallest odd prime that divides n + sum of all smaller primes
Neil Fernandez
primeness at borve.org
Fri Nov 11 20:44:45 CET 2016
Hello,
A sequence I've just submitted (A274649):
a(n) is the smallest odd prime that divides n + the sum of all smaller
primes, or 0 if unknown
Starting with a(0), the sequence runs
5, 3, 0, 0, 3, 5, 859, 3, 41, 233, 3, 7, 0, 3, 307, 5, 3, 1459, 7, 3, 5,
9907, 3, 13, 3, 31, 11
Does a(n) exist for all n?
If a(2) or a(3) exists, it is greater than 600000.
Neil
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