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A071957
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Sum( i=1, n, K(i,n) ) where K(x,y) is the Kronecker symbol (x/y).
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0
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1, 1, 0, 2, 0, 2, 0, 0, 6, 2, 0, 0, 0, 4, 0, 8, 0, 0, 0, 0, 0, 2, 0, 0, 20, 6, 0, 0, 0, 4, 0, 0, 0, 4, 0, 12, 0, 6, 0, 0, 0, 4, 0, 0, 0, 4, 0, 0, 42, 2, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 0, 8, 0, 32, 0, 8, 0, 0, 0, 4, 0, 0, 0, 10, 0, 0, 0, 4, 0, 0, 54, 4, 0, 0, 0, 10, 0, 0, 0, 4, 0, 0, 0, 8, 0, 0, 0, 2, 0, 40
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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COMMENTS
| a(n) is always >= 0
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PROG
| (PARI) for(n=1, 100, print1(sum(i=1, n, kronecker(i, n)), ", "))
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CROSSREFS
| Sequence in context: A058087 A073274 A192323 * A002655 A064891 A035211
Adjacent sequences: A071954 A071955 A071956 * A071958 A071959 A071960
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KEYWORD
| easy,nonn
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AUTHOR
| Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 16 2002
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