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A079056 Numbers of prime triples (p,q,r), p<=q<=r, such that (p+q+r) divides n. 0
0, 0, 0, 0, 0, 1, 1, 1, 2, 1, 2, 3, 2, 2, 3, 3, 4, 5, 3, 3, 6, 4, 5, 7, 5, 5, 9, 5, 7, 7, 6, 6, 11, 6, 9, 11, 9, 7, 12, 6, 11, 11, 10, 8, 17, 8, 13, 13, 13, 11, 19, 9, 16, 15, 16, 11, 20, 10, 16, 15, 16, 12, 27, 9, 23, 19, 20, 12, 25, 13, 22, 20, 21, 15, 30, 12, 31, 21, 24, 15, 34, 15, 29, 21 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,9

LINKS

Table of n, a(n) for n=1..84.

PROG

(PARI) a(n)=sum(i=1, n, sum(j=1, i, sum(k=1, j, if(n%(prime(i)+prime(j)+prime(k)), 0, 1))))

CROSSREFS

Sequence in context: A029309 A049819 A284566 * A231205 A003984 A087061

Adjacent sequences:  A079053 A079054 A079055 * A079057 A079058 A079059

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Feb 02 2003

STATUS

approved

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Last modified November 13 19:25 EST 2018. Contains 317149 sequences. (Running on oeis4.)