1,1

Table of n, a(n) for n=1..79.

n=1: 4+3=7 prime, n=2: 16+3=19 prime,

n=3: 36+5=41 prime, n=10: 400+19=419 prime.

Table[p=3; While[!PrimeQ[4n^2+p], p=NextPrime[p]]; p, {n, 100}]

Sequence in context: A054906 A269733 A138479 * A136019 A242017 A063714

Adjacent sequences: A202103 A202104 A202105 * A202107 A202108 A202109

nonn

Zak Seidov, Dec 11 2011

approved