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 A084628 #12 Mar 24 2023 10:40:21
%S A084628 1,2,3,6,9,14,20,28,39,52,68,87,110,138,171,209,253,303,361,427,501,
%T A084628 585,678,783,899,1027,1169,1325,1496,1683,1887,2109,2350,2611,2893,
%U A084628 3198,3526,3878,4257,4662,5096,5559,6053,6580,7140,7735,8366,9035,9744,10494
%N A084628 a(n) = floor(binomial(n+7,7)/binomial(n+3,3)).
%H A084628 G. C. Greubel, <a href="/A084628/b084628.txt">Table of n, a(n) for n = 0..5000</a>
%F A084628 a(n) = 1 + floor( n*(n+11)*(n^2 +11*n +58)/840 ).
%F A084628 a(n) = floor(binomial(n+7, 4)/35). - _G. C. Greubel_, Mar 24 2023
%t A084628 Table[Floor[Binomial[n+7,7]/Binomial[n+3,3]],{n,0,50}] (* _Harvey P. Dale_, Jan 27 2011 *)
%t A084628 Floor[Binomial[Range[7,77],4]/35] (* _G. C. Greubel_, Mar 24 2023 *)
%o A084628 (Magma) [Floor(Binomial(n+7,4)/35): n in [0..70]]; // _G. C. Greubel_, Mar 24 2023
%o A084628 (SageMath) [binomial(n+7,4)//35 for n in range(71)] # _G. C. Greubel_, Mar 24 2023
%Y A084628 Cf. A084627, A084629, A084630, A084631.
%K A084628 easy,nonn
%O A084628 0,2
%A A084628 _Paul Barry_, Jun 01 2003