Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A057671
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A057671 a(n) equals floor(Vc(n) - Vs(n)), where Vc(n) is the volume of the cube with side length n and Vs(n) is the volume of the sphere of diameter n. +0
1
0, 3, 12, 30, 59, 102, 163, 243, 347, 476, 634, 823, 1046, 1307, 1607, 1951, 2340, 2778, 3267, 3811, 4411, 5072, 5796, 6585, 7443, 8373, 9377, 10457, 11618, 12862, 14192, 15610, 17120, 18724, 20425, 22226, 24131 (list; graph; listen)
OFFSET

1,2

FORMULA

a(n) = floor(n^3*(1-pi/6))

EXAMPLE

a(7)=163 because 163=floor(7^3*(1-pi/6))

CROSSREFS

Sequence in context: A001860 A101459 A051408 this_sequence A027480 A135503 A048088

Adjacent sequences: A057668 A057669 A057670 this_sequence A057672 A057673 A057674

KEYWORD

nonn

AUTHOR

seiringer.flor(AT)eudoramail.com, Oct 18 2000

EXTENSIONS

Edited by James Sellers, Oct 20, 2000.

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


AT&T Labs Research