|
|
A019273
|
|
First run of n consecutive integers with same number of divisors ends at a(n).
|
|
9
|
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
The entry 40315 given in Guy and Wells is incorrect.
Terminating number in the sequence of consecutive integers with the same number of divisors in A006558. - Jud McCranie, Jan 14 2006
|
|
REFERENCES
|
R. K. Guy "Unsolved Problems in Number Theory", section B18.
David Wells "Dictionary of Curious and Interesting Numbers" #40311.
|
|
LINKS
|
|
|
EXAMPLE
|
phi(33)=phi(34)=phi(35), so a(3)=35
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,hard
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|