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A305799
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Dirichlet convolution of A078899 with itself.
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5
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1, 2, 2, 5, 2, 6, 2, 10, 7, 6, 2, 16, 2, 6, 8, 18, 2, 20, 2, 16, 8, 6, 2, 34, 11, 6, 20, 16, 2, 26, 2, 30, 8, 6, 12, 50, 2, 6, 8, 36, 2, 26, 2, 16, 28, 6, 2, 66, 15, 32, 8, 16, 2, 56, 12, 38, 8, 6, 2, 68, 2, 6, 30, 47, 12, 26, 2, 16, 8, 38, 2, 104, 2, 6, 38, 16, 16, 26, 2, 74, 47, 6, 2, 70, 12, 6, 8, 38, 2, 88, 16, 16, 8, 6, 12, 118, 2, 42
(list;
graph;
refs;
listen;
history;
text;
internal format)
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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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PROG
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(PARI)
up_to = 65537;
ordinal_transform(invec) = { my(om = Map(), outvec = vector(length(invec)), pt); for(i=1, length(invec), if(mapisdefined(om, invec[i]), pt = mapget(om, invec[i]), pt = 0); outvec[i] = (1+pt); mapput(om, invec[i], (1+pt))); outvec; };
A006530(n) = if(n>1, vecmax(factor(n)[, 1]), 1);
v078899 = ordinal_transform(vector(up_to, n, A006530(n)));
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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