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A033916
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Numbers k such that s(k) + s(k+1) + ... + s(k+14) = t(k) + t(k+1) + ... + t(k+14).
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0
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537, 1557, 8313, 16493, 18149, 55849, 145029, 211581, 334577, 436915, 3445721, 20866521, 31321817, 66133149, 143953833, 472294345, 80640391857
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OFFSET
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1,1
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COMMENTS
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LINKS
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FORMULA
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Here s(k) = sigma(k) - k, t(k) = |s(k) - k|.
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PROG
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(PARI) l=vector(15, n, abs(sigma(n)-2*n)-sigma(n)+n); l[15]=0; sc=sum(n=1, 15, l[n]); for(n=15, 10000000, m=sigma(n)-2*n; d=abs(m)-m-n; i=(n-1)%15+1; sc=sc-l[i]+d; l[i]=d; if(sc==0, print1(n-14, ", "))) \\ C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 02 2005
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 02 2005
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STATUS
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approved
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