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A051033 a(n) = binomial(n, floor(n/3)). 5
1, 1, 1, 3, 4, 5, 15, 21, 28, 84, 120, 165, 495, 715, 1001, 3003, 4368, 6188, 18564, 27132, 38760, 116280, 170544, 245157, 735471, 1081575, 1562275, 4686825, 6906900, 10015005, 30045015, 44352165, 64512240, 193536720, 286097760 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..34.

MAPLE

[seq(binomial(n, floor(n/3)), n=0..50)];

MATHEMATICA

a[n_] := Binomial[n, Floor[n/3]]; Array[a, 50, 0] (* Enrique Pérez Herrero, Mar 06 2012 *)

CROSSREFS

Cf. A001405, A051036, A051052, A051053.

Cf. A047193.

Sequence in context: A051530 A240670 A048040 * A242787 A031199 A173027

Adjacent sequences:  A051030 A051031 A051032 * A051034 A051035 A051036

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified April 10 00:05 EDT 2020. Contains 333392 sequences. (Running on oeis4.)