A204921 a(n) = (p(n)^2 - q(n)^2)/n, where (p(n)^2, q(n)^2) is the least pair of squared primes (ordered as at A204914) for which n divides p(n)^2 - q(n)^2.

5, 8, 7, 4, 1, 4, 3, 2, 5, 4, 15, 2, 9, 8, 3, 1, 21, 4, 15, 2, 1, 12, 24, 1, 21, 12, 31, 4, 33, 4, 27, 3, 5, 12, 8, 2, 24, 24, 3, 1, 45, 4, 39, 6, 1, 12, 24, 2, 45, 12, 7, 6, 24, 8, 3, 2, 5, 24, 63, 2

Offset: 1

Author

Clark Kimberling, Jan 20 2012

Keywords

• nonn

Comments

For a guide to related sequences, see A204892.

Crossrefs

Cf. A204900, A204892.

Programs

Mathematica

(See the program at A204900.)