The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A171959 a(1) = 0, for n >= 2; a(n) = the smallest number h such that tau(h) = A000005(h) = a(n-1) + 3. 9
0, 4, 64, 73786976294838206464 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
a(5) = 2^44210291368986342 * 3^1668 is too large to include.
LINKS
FORMULA
A000005(a(n)) = a(n-1) + 3 for n >= 2.
For n>1, a(n) = A005179(a(n-1) + 3).
CROSSREFS
Sequence in context: A234608 A119601 A058438 * A041119 A278547 A293562
KEYWORD
nonn
AUTHOR
Jaroslav Krizek, Nov 06 2010
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 18 21:09 EDT 2024. Contains 373487 sequences. (Running on oeis4.)