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A191631
a(n) = floor((2^n)/(2n-1)).
3
2, 1, 1, 2, 3, 5, 9, 17, 30, 53, 97, 178, 327, 606, 1129, 2114, 3971, 7489, 14169, 26886, 51150, 97541, 186413, 356962, 684784, 1315860, 2532409, 4880644, 9418787, 18199013, 35204649, 68174084, 132152839, 256415957, 497967222, 967879954, 1882725390
OFFSET
1,1
LINKS
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
Cf. A191627.
Sequence in context: A331564 A288250 A169786 * A025259 A212359 A130030
KEYWORD
nonn,less
AUTHOR
Clark Kimberling, Jun 09 2011
STATUS
approved