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 A100855 #17 Apr 16 2023 10:41:08 %S A100855 0,1,7,33,106,265,561,1057,1828,2961,4555,6721,9582,13273,17941,23745, %T A100855 30856,39457,49743,61921,76210,92841,112057,134113,159276,187825, %U A100855 220051,256257,296758,341881,391965,447361,508432,575553,649111,729505,817146,912457 %N A100855 a(n) = n*(n^3-n^2+n+1)/2. %D A100855 T. A. Gulliver, Sequences from Cubes of Integers, Int. Math. Journal, 4 (2003), 439-445. %H A100855 Vincenzo Librandi, <a href="/A100855/b100855.txt">Table of n, a(n) for n = 0..1000</a> %H A100855 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (5,-10,10,-5,1). %F A100855 G.f. x*(1+2*x+8*x^2+x^3) / (1-x)^5 . - _R. J. Mathar_, Jun 15 2011 %o A100855 (Magma) [n*(n^3-n^2+n+1)/2: n in [0..40]]; // _Vincenzo Librandi_, Jun 15 2011 %o A100855 (PARI) a(n)=n*(n^3-n^2+n+1)/2 \\ _Charles R Greathouse IV_, Oct 21 2022 %K A100855 nonn,easy %O A100855 0,3 %A A100855 _N. J. A. Sloane_, Jan 15 2005