A192674 Floor-Sqrt transform of large central Delannoy numbers (A001850).

1, 1, 3, 7, 17, 41, 94, 220, 515, 1209, 2845, 6711, 15861, 37549, 89015, 211287, 502051, 1194083, 2842413, 6771220, 16141369, 38501639, 91888052, 219411132, 524154756, 1252695124, 2995034616, 7163349548, 17138661276, 41017945745, 98196952422, 235147807457, 563242204233

Offset

0,3

Links

Table of n, a(n) for n=0..32.

Formula

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

Mathematica

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

Crossrefs

Sequence in context: A249753 A000600 A138901 * A272480 A131056 A077851

Adjacent sequences: A192671 A192672 A192673 * A192675 A192676 A192677

Keyword

nonn

Author

Emanuele Munarini, Jul 07 2011

Status

approved