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A364957
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Dirichlet inverse of A365463.
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2
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1, -2, -3, 3, -1, 6, -1, -12, 0, 3, -1, -9, -1, 2, 3, 35, -1, 0, -1, -10, 3, 3, -1, 36, -24, 2, 0, -3, -1, -9, -1, -82, 3, 2, -5, 0, -1, 2, 3, 37, -1, -6, -1, -10, 0, 3, -1, -105, 0, 46, 3, -6, -1, 0, -9, 18, 3, 3, -1, 30, -1, 2, 0, 226, -3, -9, -1, -6, 3, 12, -1, 0, -1, 2, 72, -3, 1, -6, -1, -127, 0, 3, -1, 9, -3, 2, 3
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OFFSET
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1,2
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LINKS
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FORMULA
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a(1) = 1, and for n > 1, a(n) = -Sum_{d|n, d<n} A365463(n/d) * a(d).
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PROG
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(PARI)
memoA364957 = Map();
A364957(n) = if(1==n, 1, my(v); if(mapisdefined(memoA364957, n, &v), v, v = -sumdiv(n, d, if(d<n, A365463(n/d)*A364957(d), 0)); mapput(memoA364957, n, v); (v)));
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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