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a(n) = floor(binomial(n,10)/10).
2

%I #17 Dec 07 2019 12:18:18

%S 0,0,0,0,0,0,0,0,0,0,0,1,6,28,100,300,800,1944,4375,9237,18475,35271,

%T 64664,114406,196125,326876,531173,843628,1312311,2003001,3004501,

%U 4435216,6451224,9256104,13112814,18357939

%N a(n) = floor(binomial(n,10)/10).

%H Michael De Vlieger, <a href="/A011856/b011856.txt">Table of n, a(n) for n = 0..10000</a>

%t Array[Floor[Binomial[#, 10]/10] &, 36, 0] (* _Michael De Vlieger_, Jul 06 2018 *)

%o (Sage) [floor(binomial(n,10)/10) for n in range(0,36)] # _Zerinvary Lajos_, Dec 01 2009

%Y A column of triangle A011857.

%K nonn

%O 0,13

%A _N. J. A. Sloane_