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!)
A264931 a(n) = 1+2*3^4...[n-1]n where [n] is the n-th hyperoperator. 0
1, 3, 7, 163 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
a[n]b is the square bracket notation for hyperoperation. See A054871 for more info.
LINKS
EXAMPLE
a(1) = 1;
a(2) = 1+2 = 3;
a(3) = 1+2*3 = 7;
a(4) = 1+2*3^4 = 163;
a(5) = 1+2*3^4^^5 which is too big to be included.
CROSSREFS
Sequence in context: A119958 A275195 A031881 * A227890 A114789 A128273
KEYWORD
nonn
AUTHOR
Natan Arie Consigli, Nov 29 2015
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 May 23 16:36 EDT 2024. Contains 372765 sequences. (Running on oeis4.)