login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A080869 a(n+1) = floor( (a(n)+1)^(1+1/n) ), with a(1)=1. 2
1, 4, 11, 27, 64, 149, 345, 797, 1839, 4242, 9782, 22554, 52001, 119892, 276417, 637290, 1469294, 3387506, 7810005, 18006217, 41513909, 95711641, 220666238, 508753041, 1172946341, 2704265147, 6234769423, 14374459471, 33140774109 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

FORMULA

a(n) = floor(x^n)-1, where x=2.305531847934805...

EXAMPLE

Given a(4)=27, then a(5)=64 because 64=floor((27+1)^(5/4)).

CROSSREFS

Cf. A059923, A080870.

Sequence in context: A000253 A047859 A100335 * A137229 A027439 A108985

Adjacent sequences:  A080866 A080867 A080868 * A080870 A080871 A080872

KEYWORD

nonn

AUTHOR

Paul D. Hanna (pauldhanna(AT)juno.com), Feb 21 2003

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 18:59 EST 2012. Contains 206075 sequences.