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A111304 Even numbers of the form floor( binomial(2k, 2j)/binomial(k, j)). 1
46, 452, 1618, 2476, 2926, 3944, 5628, 7628, 7830, 10130, 11688, 13676, 21190, 21882, 22598, 24228, 32848, 40654, 46974, 64660, 71574, 72310, 86306, 90660, 94222, 112312, 119290, 143078, 153884, 167006, 179004, 186654, 193342, 220490 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Take[ Select[ Union[ Flatten[ Table[ Floor[ Binomial[2n, 2k]/Binomial[n, k]], {n, 0, 76}, {k, 0, n}]]], EvenQ[ # ] &], 34]
CROSSREFS
Cf. even terms of A113245.
Sequence in context: A213286 A135735 A160285 * A055751 A232071 A156892
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified April 24 05:47 EDT 2024. Contains 371918 sequences. (Running on oeis4.)