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0, 1, 1, -7, 4, 4, 5, 5, -20, 9, 6, -10, 9, 12, 13, -33, 14, -11, 17, 9, 17, 17, 17, 18, -9, 22, 5, 6, 28, 28, 14, -23, 23, 31, 33, -283, 27, 36, 31, 37, 34, 38, 41, -11, 16, 40, 39, -50, -36, 16, 45, 8, 47, 32, 50, 50, 53, 57, 30, 38, 48, 45, 5, -1027, 61, 56, 63, 35, 57, 68, 40, -15, 70, 64, 7, 54, 67, 70, 69, 31
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,4
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LINKS
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FORMULA
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PROG
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(PARI)
A003961(n) = my(f = factor(n)); for (i=1, #f~, f[i, 1] = nextprime(f[i, 1]+1)); factorback(f); \\ From A003961
A064989(n) = {my(f); f = factor(n); if((n>1 && f[1, 1]==2), f[1, 2] = 0); for (i=1, #f~, f[i, 1] = precprime(f[i, 1]-1)); factorback(f)};
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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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