A396668 - OEIS

%I #7 Jun 05 2026 09:18:11

%S 1,2,2,1,5,2,5,4,5,3,11,1,15,5,8,4,15,4,22,7,12,9,26,5,18,8,15,9,28,2,

%T 30,8,16,11,26,11,30,15,21,11,45,11,43,13,17,15,43,7,34,14,32,23,49,8,

%U 38,15,32,18,46,8,60,22,31,18,46,12,56,22,46,14,66,10

%N Number of primes p such that n is the smallest value of z for which there exists a solution to p = x*y+y*z+z*x in nonnegative integers x <= y <= z.

%C a(n) is the number of primes p such that A396665(p) = n.

%H Pontus von Brömssen, <a href="/A396668/b396668.txt">Table of n, a(n) for n = 1..10000</a>

%F a(n) = A394353(n)-A394353(n-1).

%Y Cf. A394353, A396665, A396667.

%K nonn

%O 1,2

%A _Pontus von Brömssen_, Jun 03 2026