OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..600
MATHEMATICA
f[n_] := Floor[(2^n)/(2 n - 1)]
Table[f[n], {n, 1, 40}] (* A191631 *)
PROG
(PARI) a(n)=2^n\(2*n-1) \\ Charles R Greathouse IV, Jun 17 2011
(Maxima) A191631(n):=floor( 2^n/(2*n-1) )$ makelist(A191631(n), n, 1, 30); /* Martin Ettl, Oct 25 2012 */
CROSSREFS
KEYWORD
nonn,less
AUTHOR
Clark Kimberling, Jun 09 2011
STATUS
approved