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A024504 a(n) = floor(C(2n,n)/2^(n+1)). 0

%I

%S 0,0,0,1,2,3,7,13,25,47,90,172,330,634,1224,2366,4585,8902,17309,

%T 33707,65730,128330,250828,490750,961053,1883664,3694880,7252914,

%U 14246796,28002324,55071237,108365983,213345529,420226042,828092495,1632525204

%N a(n) = floor(C(2n,n)/2^(n+1)).

%t Table[ Floor[ Binomial[2n, n]/2^(n + 1)], {n, 0, 35}] (* _Robert G. Wilson v_, Nov 26 2004 *)

%K nonn

%O 0,5

%A _Clark Kimberling_

%E More terms from _Robert G. Wilson v_, Nov 26 2004

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Last modified August 10 04:38 EDT 2020. Contains 336368 sequences. (Running on oeis4.)