A106547 Perfect squares n^2 which are neither the sum nor the difference of two primes (otherwise 0).

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 121, 0, 0, 0, 0, 0, 289, 0, 0, 0, 0, 0, 529, 0, 625, 0, 0, 0, 0, 0, 961, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1681, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2601, 0, 2809, 0, 0, 0, 0, 0, 3481, 0, 0, 0, 0, 0, 4225, 0, 4489, 0, 0, 0, 0, 0, 5329, 0, 0, 0, 0, 0, 6241, 0, 0, 0, 6889, 0

Offset

1,11

Links

Table of n, a(n) for n=1..84.

Formula

a(n) = Min(A106544(n), n^2-A106546(n)).

Crossrefs

Cf. A106544-A106548, A106562-A106564, A106571, A106573-A106575, A106577.

Sequence in context: A365266 A045509 A033187 * A106544 A370512 A079842

Adjacent sequences: A106544 A106545 A106546 * A106548 A106549 A106550

Keyword

easy,nonn

Author

Alexandre Wajnberg, May 08 2005

Extensions

Corrected and extended by Ray Chandler, May 12 2005

Status

approved