A204920 - OEIS

A204920

a(n) = p(n)^2 - q(n)^2, where (p(n)^2, q(n)^2) is the least pair of squared primes for which n divides p(n)^2 - q(n)^2.

%I #11 Sep 20 2018 00:30:00

%S 5,16,21,16,5,24,21,16,45,40,165,24,117,112,45,16,357,72,285,40,21,

%T 264,552,24,525,312,837,112,957,120,837,96,165,408,280,72,888,912,117,

%U 40,1845,168,1677,264,45,552,1128,96,2205,600,357,312,1272,432

%N a(n) = p(n)^2 - q(n)^2, where (p(n)^2, q(n)^2) is the least pair of squared primes for which n divides p(n)^2 - q(n)^2.

%C For a guide to related sequences, see A204892.

%t (See the program at A204908.)

%Y Cf. A204908, A204900, A204892.

%K nonn

%O 1,1

%A _Clark Kimberling_, Jan 20 2012