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A051321
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Euclid-Mullin sequence (A000945) with initial value a(1)=59 instead of a(1)=2.
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1
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59, 2, 7, 827, 3, 13, 4583, 5, 610478010871, 61, 292658543, 4483, 47, 11, 31, 43, 16453, 41, 3671, 1982639, 628319, 841476613, 449, 997793, 73, 983, 53, 28475917, 19, 673
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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a[1]=59; a[n_] := First[ Flatten[ FactorInteger[ 1+Product[ a[ j ], {j, 1, n-1} ] ] ] ]; Array[a, 10]
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PROG
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(PARI) spf(n)=my(f=factor(n)[1, 1]); f
first(m)=my(v=vector(m)); v[1]=59; for(i=2, m, v[i]=spf(1+prod(j=1, i-1, v[j]))); v \\ Anders Hellström, Dec 04 2015
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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