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A005072 Sum of cubes of primes = 1 mod 3 dividing n. +0
1
0, 0, 0, 0, 0, 0, 343, 0, 0, 0, 0, 0, 2197, 343, 0, 0, 0, 0, 6859, 0, 343, 0, 0, 0, 0, 2197, 0, 343, 0, 0, 29791, 0, 0, 0, 343, 0, 50653, 6859, 2197, 0, 0, 343, 79507, 0, 0, 0, 0, 0, 343, 0, 0, 2197, 0, 0, 0, 343, 6859, 0 (list; graph; listen)
OFFSET

1,7

FORMULA

Additive with a(p^e) = p^3 if p = 1 (mod 3), 0 otherwise.

CROSSREFS

Sequence in context: A023909 A035844 A028681 this_sequence A112821 A045130 A045269

Adjacent sequences: A005069 A005070 A005071 this_sequence A005073 A005074 A005075

KEYWORD

nonn

AUTHOR

njas

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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