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A065374
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Smallest k such that f(f(...f(k))) > 1, where f(k) = A065371(k) is iterated n times.
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4
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5, 13, 29, 43, 61, 307, 383, 2689, 9209, 14897, 83557, 274679, 598333, 3516973, 11295673, 24104629, 229561369
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internal format)
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OFFSET
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1,1
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COMMENTS
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This sequence contains only prime numbers. - Paul Tek, Jun 10 2013
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LINKS
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EXAMPLE
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After 10 iterations of A065371 we have a sequence starting with 14896 1's followed by 6, so a(10)= 14897.
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CROSSREFS
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KEYWORD
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more,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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