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A005066 Sum of squares of odd primes dividing n. 0
0, 0, 9, 0, 25, 9, 49, 0, 9, 25, 121, 9, 169, 49, 34, 0, 289, 9, 361, 25, 58, 121, 529, 9, 25, 169, 9, 49, 841, 34, 961, 0, 130, 289, 74, 9, 1369, 361, 178, 25, 1681, 58, 1849, 121, 34, 529, 2209, 9, 49, 25, 298, 169 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

FORMULA

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

CROSSREFS

Sequence in context: A067153 A057405 A167354 * A076262 A167301 A177741

Adjacent sequences:  A005063 A005064 A005065 * A005067 A005068 A005069

KEYWORD

nonn

AUTHOR

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

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Last modified February 14 16:36 EST 2012. Contains 205635 sequences.