The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A152738 a(n) = floor((n^2)/phi). 4
 0, 0, 2, 5, 9, 15, 22, 30, 39, 50, 61, 74, 88, 104, 121, 139, 158, 178, 200, 223, 247, 272, 299, 326, 355, 386, 417, 450, 484, 519, 556, 593, 632, 673, 714, 757, 800, 846, 892, 940, 988, 1038, 1090, 1142, 1196, 1251, 1307, 1365, 1423, 1483, 1545, 1607, 1671 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS G. C. Greubel, Table of n, a(n) for n = 0..5000 MATHEMATICA a[n_]:=Floor[(n^2)/GoldenRatio]; PROG (PARI) a(n)=n^2\((1+sqrt(5))/2) \\ Charles R Greathouse IV, Jul 29 2011 (Magma) phi:=(1+Sqrt(5))/2; [Floor(n^2/phi): n in [0..30]]; // G. C. Greubel, Sep 01 2018 CROSSREFS Cf. A014217, A152737, A032616, A032635. Sequence in context: A184535 A033096 A195014 * A022941 A320259 A007982 Adjacent sequences: A152735 A152736 A152737 * A152739 A152740 A152741 KEYWORD nonn AUTHOR Vladimir Joseph Stephan Orlovsky, Dec 12 2008 EXTENSIONS Offset corrected by B. D. Swan, Jan 03 2009 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.

Last modified December 3 09:50 EST 2022. Contains 358517 sequences. (Running on oeis4.)