OFFSET
1,1
COMMENTS
Approximate area of the dodecahedron of side n=(1,2,3,4,...).
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
With[{c=3(2+Sqrt[3])}, Floor[c Range[50]^2]] (* Harvey P. Dale, Apr 01 2011 *)
f[n_]:=Floor[3 n^2 (2 + Sqrt[3])]; Array[f, 50, 1] (* Vincenzo Librandi, Aug 20 2014 *)
PROG
(Magma) [Floor(3*n^2*(2+Sqrt(3))): n in [1..50]]; // Vincenzo Librandi, Aug 20 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Feb 06 2010
STATUS
approved