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A106547 Perfect squares n^2 which are neither the sum nor the difference of two primes (otherwise 0). 2
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 (list; graph; refs; listen; history; text; internal format)
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: A172730 A045509 A033187 * A106544 A079842 A014756

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

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Last modified December 4 06:30 EST 2016. Contains 278749 sequences.