A192672 Floor-Sqrt transform of little Schroeder numbers (A001003).

1, 1, 1, 3, 6, 14, 30, 65, 144, 321, 720, 1626, 3694, 8428, 19305, 44371, 102291, 236450, 547868, 1272148, 2959613, 6897450, 16100184, 37635909, 88095027, 206458158, 484399704, 1137707979, 2674734202, 6293966627, 14823002101, 34937537185, 82408390392, 194515481823

Offset

0,4

Links

Table of n, a(n) for n=0..33.

Formula

a(n) = floor(sqrt(littleSchroder(n))).

Mathematica

 FSFromSeries[f_, x_, n_] := Map[Floor[Sqrt[#]]&, CoefficientList[Series[f, {x, 0, n}], x]]
FSFromSeries[(1+x-Sqrt[1-6x+x^2])/(4x), x, 100]

Crossrefs

Sequence in context: A077067 A083797 A308580 * A175656 A196450 A131244

Adjacent sequences: A192669 A192670 A192671 * A192673 A192674 A192675

Keyword

nonn

Author

Emanuele Munarini, Jul 07 2011

Status

approved