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A024503 a(n) = floor(binomial(2*n,n)/3^n). 0
1, 0, 0, 0, 0, 1, 1, 1, 1, 2, 3, 3, 5, 6, 8, 10, 13, 18, 23, 30, 39, 51, 67, 87, 114, 149, 195, 255, 334, 438, 574, 753, 988, 1298, 1706, 2242, 2948, 3877, 5102, 6716, 8842, 11646, 15343, 20220, 26654, 35144, 46349, 61142, 80673, 106467, 140537, 185545, 245015 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,10

LINKS

Table of n, a(n) for n=0..52.

CROSSREFS

Sequence in context: A039852 A241068 A035938 * A321286 A061790 A107236

Adjacent sequences:  A024500 A024501 A024502 * A024504 A024505 A024506

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Alois P. Heinz, Jun 23 2018

STATUS

approved

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Last modified August 4 06:38 EDT 2020. Contains 336201 sequences. (Running on oeis4.)