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.

5, 16, 21, 16, 5, 24, 21, 16, 45, 40, 165, 24, 117, 112, 45, 16, 357, 72, 285, 40, 21, 264, 552, 24, 525, 312, 837, 112, 957, 120, 837, 96, 165, 408, 280, 72, 888, 912, 117, 40, 1845, 168, 1677, 264, 45, 552, 1128, 96, 2205, 600, 357, 312, 1272, 432

Offset

1,1

Comments

For a guide to related sequences, see A204892.

Links

Table of n, a(n) for n=1..54.

Mathematica

(See the program at A204908.)

Crossrefs

Cf. A204908, A204900, A204892.

Sequence in context: A063612 A269969 A057281 * A168469 A124865 A090781

Adjacent sequences: A204917 A204918 A204919 * A204921 A204922 A204923

Keyword

nonn

Author

Clark Kimberling, Jan 20 2012

Status

approved