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A045419 Primes congruent to {1, 3, 7} mod 8. +0
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3, 7, 11, 17, 19, 23, 31, 41, 43, 47, 59, 67, 71, 73, 79, 83, 89, 97, 103, 107, 113, 127, 131, 137, 139, 151, 163, 167, 179, 191, 193, 199, 211, 223, 227, 233, 239, 241, 251, 257, 263, 271, 281, 283, 307, 311, 313 (list; graph; listen)
OFFSET

1,1

COMMENT

Primes that can be expressed as the sum of three squares, different from zero, divided by 3: (a^2+b^2+c^2)/3, with a,b and c integers different from zero Examples: (2^2+2^2+13^2)/3 = 59; (2^2+4^2+17^2)/3 = 103. - Paolo P. Lava (ppl(AT)spl.at), Jul 26 2006

CROSSREFS

Sequence in context: A130090 A136059 A156284 this_sequence A049098 A119992 A023249

Adjacent sequences: A045416 A045417 A045418 this_sequence A045420 A045421 A045422

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 22 20:51 EST 2009. Contains 167312 sequences.


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