This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A051033 #24 Jul 31 2023 09:32:49 %S A051033 1,1,1,3,4,5,15,21,28,84,120,165,495,715,1001,3003,4368,6188,18564, %T A051033 27132,38760,116280,170544,245157,735471,1081575,1562275,4686825, %U A051033 6906900,10015005,30045015,44352165,64512240,193536720,286097760,417225900,1251677700 %N A051033 a(n) = binomial(n, floor(n/3)). %H A051033 Seiichi Manyama, <a href="/A051033/b051033.txt">Table of n, a(n) for n = 0..1000</a> %p A051033 [seq(binomial(n,floor(n/3)), n=0..50)]; %t A051033 a[n_] := Binomial[n, Floor[n/3]]; Array[a, 50, 0] (* _Enrique Pérez Herrero_, Mar 06 2012 *) %Y A051033 Cf. A001405, A051036, A051052, A051053, A062947. %Y A051033 Cf. A047193. %K A051033 nonn,easy %O A051033 0,4 %A A051033 _N. J. A. Sloane_