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A178427
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7 followed by the Fermat numbers A152581.
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3
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OFFSET
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0,1
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COMMENTS
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If a(0)=3, the recursion formula gives A000215.
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LINKS
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FORMULA
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a(0)=7. a(n) = 2 + Product_{i=0..n-1} a(i).
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MATHEMATICA
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a[0] := 7;
a[n_] := a[n] = Product[a[i], {i, 0, n - 1}] + 2;
Table[a[n], {n, 0, 10}]
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CROSSREFS
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KEYWORD
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nonn,less
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AUTHOR
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EXTENSIONS
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Definition simplified by the Assoc. Eds. of the OEIS - May 28 2010
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STATUS
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approved
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