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A019273
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First run of n consecutive integers with same number of divisors ends at a(n).
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6
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OFFSET
| 1,2
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COMMENTS
| Terminating number in the sequence of consecutive integers with the same number of divisors in A006558. - Jud McCranie (JudMcCranie(AT)ugaalum.uga.edu), Jan 14 2006
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REFERENCES
| R. K. Guy "Unsolved Problems in Number Theory", section B18.
David Wells "Dictionary of Curious and Interesting Numbers" #40311.
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EXAMPLE
| phi(33)=phi(34)=phi(35), so a(3)=35
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CROSSREFS
| Cf. A000005, A005237, A005238, A006601, A049051, A006558, A039665.
a(n)=A006558(n)+n-1.
Sequence in context: A133710 A130061 A061548 * A202883 A069448 A121078
Adjacent sequences: A019270 A019271 A019272 * A019274 A019275 A019276
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KEYWORD
| nonn
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AUTHOR
| JudMcCranie(AT)ugaalum.uga.edu (JUD MCCRANIE)
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EXTENSIONS
| The entry 40315 given in Guy and Wells is incorrect.
More terms from Jud McCranie (JudMcCr(AT)BellSouth.net), Oct 04 2002
One more term from Jud McCranie (JudMcCranie(AT)ugaalum.uga.edu), Jan 14 2006
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