1,1

Colin Barker, Table of n, a(n) for n = 1..1000

449 is in the sequence because 449 = 29^2 - 8*7^2 and 449, 29 and 7 are all primes.

Cf. A260805, A260806, A260808, A260809.

Sequence in context: A253648 A088993 A107202 * A178917 A159026 A256240

Adjacent sequences: A260804 A260805 A260806 * A260808 A260809 A260810

nonn

Colin Barker, Jul 31 2015

approved