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A106548 Perfect squares n^2 which are both the sum and the difference of two primes (otherwise 0). 12
0, 4, 9, 16, 0, 36, 0, 64, 81, 100, 0, 144, 0, 196, 225, 256, 0, 324, 0, 400, 441, 484, 0, 576, 0, 676, 0, 784, 0, 900, 0, 1024, 1089, 1156, 0, 1296, 0, 1444, 0, 1600, 0, 1764, 0, 1936, 0, 2116, 0, 2304, 0, 2500, 0, 2704, 0, 2916, 0, 3136, 0, 3364, 0, 3600, 0, 3844, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..63.

FORMULA

a(n) = Min(A106545(n), A106546(n)).

CROSSREFS

Cf. A106544-A106547, A106562-A106564, A106571, A106573-A106575, A106577.

Sequence in context: A228553 A337568 A070447 * A106546 A276191 A007893

Adjacent sequences:  A106545 A106546 A106547 * A106549 A106550 A106551

KEYWORD

easy,nonn

AUTHOR

Alexandre Wajnberg, May 08 2005

EXTENSIONS

Extended by Ray Chandler, May 12 2005

STATUS

approved

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Last modified October 20 10:00 EDT 2020. Contains 337900 sequences. (Running on oeis4.)