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A005083 Sum of squares of primes = 3 mod 4 dividing n. 0
0, 0, 9, 0, 0, 9, 49, 0, 9, 0, 121, 9, 0, 49, 9, 0, 0, 9, 361, 0, 58, 121, 529, 9, 0, 0, 9, 49, 0, 9, 961, 0, 130, 0, 49, 9, 0, 361, 9, 0, 0, 58, 1849, 121, 9, 529, 2209, 9, 49, 0, 9, 0, 0, 9, 121, 49, 370, 0, 3481, 9, 0, 961, 58 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

FORMULA

Additive with a(p^e) = p^2 if p = 3 (mod 4), 0 otherwise.

CROSSREFS

Sequence in context: A021115 A073052 A176908 * A050453 A103636 A158336

Adjacent sequences:  A005080 A005081 A005082 * A005084 A005085 A005086

KEYWORD

nonn

AUTHOR

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

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Last modified February 17 11:46 EST 2012. Contains 206011 sequences.