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A249017
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Records in A055460 (number of primes dividing the squarefree part of n!).
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3
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0, 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26, 27, 28, 30, 31, 32, 34, 36, 37, 38, 39, 41, 42, 43, 44, 46, 47, 49, 50, 51, 52, 53, 54, 55, 57, 58, 59, 60, 61, 63, 64, 65, 67, 68, 69, 70, 72, 74, 75, 76, 77, 78, 79, 80, 81, 82, 85, 86, 87, 88, 91, 93, 95, 98, 99, 100
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OFFSET
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1,3
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LINKS
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PROG
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(PARI) np=vector(10^6); b=-1; r=0; for(n=1, 10^6, f=factor(n); for(i=1, matsize(f)[1], if(f[i, 2]%2, r += (-1)^np[f[i, 1]]; np[f[i, 1]]=1-np[f[i, 1]]; )); if(r>b, b=r; print1(b, ", ")) )
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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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