|
| |
|
|
A034173
|
|
a(n) is minimal such that prime factorizations of a(n), ..., a(n)+n-1 have same exponents.
|
|
7
| | |
|
|
|
OFFSET
| 1,2
|
|
|
COMMENTS
| a(8) > 10^13. [From Donovan Johnson (donovan.johnson(AT)yahoo.com), Oct 20 2009]
|
|
|
FORMULA
| a(n) = A034174(n) - n + 1. [From Max Alekseyev (maxale(AT)gmail.com), Nov 10 2009]
|
|
|
EXAMPLE
| a(4)=19940 because 19940, ..., 19943 all have the form p^2 q r.
|
|
|
CROSSREFS
| Cf. A034174.
Cf. A006558, A083790.
Sequence in context: A113105 A132567 A083459 * A132519 A117969 A003820
Adjacent sequences: A034170 A034171 A034172 * A034174 A034175 A034176
|
|
|
KEYWORD
| hard,nonn,more
|
|
|
AUTHOR
| Dean Hickerson (dean.hickerson(AT)yahoo.com), Oct 01 1998
|
|
|
EXTENSIONS
| a(7) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Oct 20 2009
|
| |
|
|
