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 A011911 #19 Jan 25 2025 12:50:35
%S A011911 0,0,0,0,0,2,4,7,11,17,24,34,45,59,75,94,115,140,168,200,235,275,318,
%T A011911 366,418,475,537,605,677,756,840,930,1026,1128,1238,1354,1477,1607,
%U A011911 1745,1890,2044,2205,2375,2553,2740,2935,3140,3354,3578,3811,4055,4308,4572,4846,5131,5427,5735,6053,6384,6726,7080,7446,7824,8216,8620,9037,9467,9911,10368,10840
%N A011911 a(n) = floor( n*(n-1)*(n-2)/29 ).
%H A011911 G. C. Greubel, <a href="/A011911/b011911.txt">Table of n, a(n) for n = 0..2000</a>
%H A011911 <a href="/index/Rec#order_32">Index entries for linear recurrences with constant coefficients</a>, signature (3,-3,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,-3,3,-1).
%F A011911 G.f.: x^5*(2+x*(-2+x+x^3-x^4+2*x^5-2*x^6+2*x^7-x^8+x^9-x^10+2*x^11-x^12+x^13-x^14+2*x^15-2*x^16+2*x^17-x^18+x^19+x^21-2*x^22+3*x^23-2*x^24+x^25))/((1-x)^3*(1-x^29)). - _Peter J. C. Moses_, Jun 02 2014
%t A011911 Floor[6*Binomial[Range[0,75], 3]/29] (* _G. C. Greubel_, Oct 19 2024 *)
%t A011911 Table[Floor[(2n-3n^2+n^3)/29],{n,0,100}] (* _Harvey P. Dale_, Jan 25 2025 *)
%o A011911 (Magma) [Floor(6*Binomial(n,3)/29): n in [0..80]]; // _G. C. Greubel_, Oct 19 2024
%o A011911 (SageMath) [6*binomial(n,3)//29 for n in range(81)] # _G. C. Greubel_, Oct 19 2024
%Y A011911 Cf. A011886.
%K A011911 nonn
%O A011911 0,6
%A A011911 _N. J. A. Sloane_
%E A011911 More terms added by _G. C. Greubel_, Oct 19 2024