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A217709
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Numbers of the form p^q^r, for p,q,r primes.
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1
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16, 81, 256, 512, 625, 2401, 6561, 14641, 19683, 28561, 83521, 130321, 279841, 390625, 707281, 923521, 1874161, 1953125, 2825761, 3418801, 4879681, 5764801, 7890481, 12117361, 13845841, 20151121, 25411681, 28398241, 33554432, 38950081, 40353607, 47458321
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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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EXAMPLE
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a(1) = 2^2^2 = 16;
a(2) = 3^2^2 = 81;
a(3) = 2^2^3 = 256;
a(4) = 2^3^2 = 512;
a(5) = 5^2^2 = 625.
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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