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 A213455 N2329 #16 Jul 03 2023 20:15:00 %S A213455 90,1260,13230,126720,1171170,10663380,96461910,870123240,7838973450, %T A213455 70582218300,635365793790,5718795460560,51471172410930, %U A213455 463248604762020,4169269655112870,37523555745034680,337712517101387610,3039414715496790540,27354740685808323150,246192699157623741600,2215734424360009007490 %N A213455 90*A002451(n). %D A213455 S. A. Joffe, Calculation of the first thirty-two Eulerian numbers from central differences of zero, Quart. J. Pure Appl. Math. 47 (1914), 103-126. %D A213455 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %H A213455 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (14, -49, 36). %F A213455 From _Chai Wah Wu_, Jan 30 2018: (Start) %F A213455 a(n) = 14*a(n-1) - 49*a(n-2) + 36*a(n-3) for n > 2. %F A213455 G.f.: 90/((1 - x)*(1 - 4*x)*(1 - 9*x)). (End) %Y A213455 Cf. A002451. A diagonal of the triangle in A241171. %K A213455 nonn %O A213455 0,1 %A A213455 _N. J. A. Sloane_, Jun 12 2012