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A111134
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Numbers of the form p^(p^k-1) (p prime, k>=0).
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1
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1, 2, 8, 9, 128, 625, 6561, 32768, 117649, 2147483648, 25937424601, 2541865828329, 23298085122481, 59604644775390625, 9223372036854775808, 48661191875666868481, 104127350297911241532841
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OFFSET
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1,2
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COMMENTS
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The refactorable prime powers A000961.
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LINKS
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CROSSREFS
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The sequence forms a subsequence of the refactorable numbers A033950; on the other hand A036878 is a subsequence.
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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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