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 A318627 #7 Aug 30 2018 23:16:42 %S A318627 0,1,452,6198,33594,118755,324516,749398,1533686,2869719,5005980, %T A318627 8259888,13019358,19757815,29033576,41507700,57939438,79208745, %U A318627 106307256,140364532,182635562,234531357,297600576,373566942,464304450,571880029,698523980,846678498 %N A318627 Number of 6-member subsets of [6*n] whose elements sum to a multiple of n. %H A318627 Alois P. Heinz, <a href="/A318627/b318627.txt">Table of n, a(n) for n = 0..10000</a> %H A318627 <a href="/index/Rec#order_15">Index entries for linear recurrences with constant coefficients</a>, signature (2,1,-3,-1,1,4,-3,-3,4,1,-1,-3,1,2,-1). %F A318627 G.f.: x*(6*x^14 +450*x^13 +5286*x^12 +20787*x^11 +46696*x^10 +72381*x^9 +88225*x^8 +92230*x^7 +88135*x^6 +72457*x^5 +46726*x^4 +20749*x^3 +5293*x^2 +450*x+1) / ((x^2-x+1) *(x^2+x+1)^2 *(x+1)^3 *(x-1)^6). %Y A318627 Row n=6 of A318557. %K A318627 nonn,easy %O A318627 0,3 %A A318627 _Alois P. Heinz_, Aug 30 2018