A352851 a(n) = prime(n)^2 + prime(n+1).

7, 14, 32, 60, 134, 186, 308, 384, 558, 872, 998, 1410, 1724, 1896, 2262, 2868, 3542, 3788, 4560, 5114, 5408, 6324, 6978, 8018, 9510, 10304, 10716, 11558, 11994, 12896, 16260, 17298, 18908, 19470, 22352, 22958, 24812, 26736, 28062, 30108, 32222, 32952, 36674, 37446, 39008, 39812, 44744, 49956

Offset: 1

Author

Robert Israel, Apr 05 2022

Keywords

• nonn

Examples

			a(3) = 5^2 + 7 = 32.
		

Links

• Robert Israel, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000040, A001248, A140511, A349660.

Programs

Maple

seq(ithprime(i)^2+ithprime(i+1), i=1..100);

Mathematica

a[n_] := Prime[n]^2 + Prime[n + 1]; Array[a, 50] (* Amiram Eldar, Apr 07 2022 *)

Formula

a(n) = A001248(n) + A000040(n+1).

a(n) = 2*A140511(n), for n>1. - Michel Marcus, Mar 25 2023