A103766 - OEIS

A103766

Primes equal to the sum of two integers squares, integers whose sum form prime(n) congruent to 1 (mod 4).

17, 97, 257, 641, 1297, 881, 2417

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OFFSET

1,1

LINKS

EXAMPLE

a(1)=17 because 4^2+1^2=17 and 4+1=prime(3)=5;

a(2)=97 because 9^2+4^2=97 and 9+4=prime(6)=13;

a(3)=257 because 16^2+1^2=257 and 16+1=prime(7)=17.

CROSSREFS

KEYWORD

easy,nonn

AUTHOR

STATUS

approved