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 A254148 #16 Jun 13 2015 00:55:22 %S A254148 55,220,1210,7942,57838,450670,3682030,31153342,270739678,2403012910, %T A254148 21693441550,198578979742,1838853136318,17193665419150, %U A254148 162090976108270,1538867288166142,14698448516729758,141129617123665390,1361277292619082190 %N A254148 a(n) = 9*2^n + 7*4^n + 3*8^n + 8*3^n + 2*9^n + 6*5^n + 5*6^n + 4*7^n + 10^n + 10. %C A254148 This is the sequence of tenth terms of "second partial sums of m-th powers". %H A254148 Colin Barker, <a href="/A254148/b254148.txt">Table of n, a(n) for n = 0..999</a> %H A254148 Luciano Ancora, <a href="/A254148/a254148.pdf">Demonstration of formulas</a> %H A254148 <a href="/index/Rec#order_10">Index entries for linear recurrences with constant coefficients</a>, signature (55,-1320,18150,-157773,902055,-3416930,8409500,-12753576,10628640,-3628800). %F A254148 G.f.: -(80627040*x^9 -184920912*x^8 +175484892*x^7 -91478420*x^6 +29111445*x^5 -5902743*x^4 +766458*x^3 -61710*x^2 +2805*x -55) / ((x -1)*(2*x -1)*(3*x -1)*(4*x -1)*(5*x -1)*(6*x -1)*(7*x -1)*(8*x -1)*(9*x -1)*(10*x -1)). - _Colin Barker_, Jan 28 2015 %o A254148 (PARI) vector(30, n, n--; 9*2^n + 7*4^n + 3*8^n + 8*3^n + 2*9^n + 6*5^n + 5*6^n + 4*7^n + 10^n + 10) \\ _Colin Barker_, Jan 28 2015 %Y A254148 Cf. A052548, A254028, A254030, A254031, A254144, A254145, A254146, A254147. %K A254148 nonn,easy %O A254148 0,1 %A A254148 _Luciano Ancora_, Jan 28 2015