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 A167544 #53 Jul 01 2025 18:40:39
%S A167544 -2,-3,-3,-2,0,3,7,12,18,25,33,42,52,63,75,88,102,117,133,150,168,187,
%T A167544 207,228,250,273,297,322,348,375,403,432,462,493,525,558,592,627,663,
%U A167544 700,738,777,817,858,900,943,987,1032,1078,1125,1173
%N A167544 a(n) = (n-3)*(n-8)/2.
%C A167544 Essentially a duplicate of A055998.
%H A167544 G. C. Greubel, <a href="/A167544/b167544.txt">Table of n, a(n) for n = 4..1000</a>
%H A167544 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (3,-3,1).
%F A167544 a(n) = 3*a(n-1) - 3*a(n-2) + a(n-3).
%F A167544 G.f.: x^4*(-2 + 3*x)/(1-x)^3.
%F A167544 a(n) = A055998(n-8). - _Philippe Deléham_, Nov 25 2009
%F A167544 a(n) = a(n-1) + n - 6 (with a(4)=-2). - _Vincenzo Librandi_, Dec 05 2010
%F A167544 a(n) = A027379(n-8) for n >= 9. - _Georg Fischer_, Oct 24 2018
%F A167544 E.g.f.: (1/2)*( (24 -10*x + x^2)*exp(x) - (24 + 14*x + 3*x^2) ). - _G. C. Greubel_, Jul 30 2022
%t A167544 Table[(n-3)*(n-8)/2, {n,4,60}] (* _G. C. Greubel_, Jun 15 2016 *)
%o A167544 (PARI) a(n)=(n-3)*(n-8)/2 \\ _Charles R Greathouse IV_, Jun 17 2017
%o A167544 (Magma) [(n-3)*(n-8)/2: n in [4..60]]; // _G. C. Greubel_, Jul 30 2022
%o A167544 (SageMath) [(n-3)*(n-8)/2 for n in (4..60)] # _G. C. Greubel_, Jul 30 2022
%Y A167544 Cf. A027379, A055998, A135929, A137276.
%K A167544 sign,easy,less
%O A167544 4,1
%A A167544 _Jamel Ghanouchi_, Nov 06 2009
%E A167544 Edited and extended by _R. J. Mathar_, Nov 12 2009