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!)
A055591 a(n) = a(n-1)+3^a(n-1). 2
0, 1, 4, 85, 35917545547686059365808220080151141317128 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
FORMULA
a(n) = A055591(n-1)+A055590(n)
EXAMPLE
a(3) = 4+3^4 = 4+81 = 85
MATHEMATICA
NestList[#+3^#&, 0, 4] (* Harvey P. Dale, Apr 18 2012 *)
CROSSREFS
Sequence in context: A223955 A116330 A055776 * A055764 A163279 A130268
KEYWORD
easy,nonn
AUTHOR
Henry Bottomley, May 26 2000
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 13 23:15 EDT 2024. Contains 372524 sequences. (Running on oeis4.)