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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A057843 a(n) = floor(n*tau^2) - 3, where tau = (1+sqrt(5))/2. 2
-1, 2, 4, 7, 10, 12, 15, 17, 20, 23, 25, 28, 31, 33, 36, 38, 41, 44, 46, 49, 51, 54, 57, 59, 62, 65, 67, 70, 72, 75, 78, 80, 83, 86, 88, 91, 93, 96, 99, 101, 104, 106, 109, 112, 114, 117, 120, 122, 125, 127, 130, 133, 135, 138, 140, 143, 146, 148, 151, 154, 156, 159 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

This sequence and A007064 are very similar - this can be seen if the terms equal to 4 are aligned. - Thomas Baruchel, Nov 04 2003

LINKS

Table of n, a(n) for n=1..62.

MATHEMATICA

Floor[GoldenRatio^2 Range[70]]-3 (* Harvey P. Dale, May 15 2014 *)

PROG

(PARI) a(n)=(3+sqrt(5))*n\2 - 3 \\ Charles R Greathouse IV, Jan 23 2015

CROSSREFS

Subtract 2 from each term of A003622. Complement of A058065.

Sequence in context: A164903 A285968 A218772 * A047539 A190521 A186224

Adjacent sequences:  A057840 A057841 A057842 * A057844 A057845 A057846

KEYWORD

sign

AUTHOR

N. J. A. Sloane, Nov 24 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 20 00:47 EDT 2019. Contains 324223 sequences. (Running on oeis4.)