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A165428
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a(1) = 1, a(2) = 10; thereafter a(n) = Product_{1 <= i <= n-1} a(i).
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3
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OFFSET
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1,2
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LINKS
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FORMULA
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a(1) = 1, a(2) = 10, a(3) = 10, and for n > 3 a(n) = (a(n-1))^2.
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MATHEMATICA
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a[1] = 1; a[2] = 10; a[n_] := Times @@ Array[a, n - 1]; Array[a, 9] (* Robert G. Wilson v, Oct 13 2009 *)
Join[{1, 10}, NestList[#^2&, 10, 10]] (* Harvey P. Dale, Nov 30 2021 *)
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PROG
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(PARI) {a(n) = if(n==1, 1, if(n==2, 10, prod(j=1, n-1, a(j))))};
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CROSSREFS
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KEYWORD
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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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