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 A054449 #4 Mar 31 2012 13:20:01 %S A054449 1,4,14,46,144,436,1287,3724,10603,29788,82748,227658,621122,1682252, %T A054449 4526845,12111512,32237253,85407188,225318042,592141478,1550688932, %U A054449 4047787844,10534503523,27340763556,70777265551,182785072876 %N A054449 Row sums of triangle A054448 (second member of partial row sums triangle family of Fibonacci convolution triangle). %F A054449 a(n)= sum(A054448(n, m), m=0..n)= ((2*n^2+17*n+32)*P(n+1)+13*(n+1)*P(n))/32, P(n)= A000129(n) (Pell numbers). %F A054449 G.f.: ((Pell(x))^3)/(Fib(x))^2, with Pell(x)= 1/(1-2*x-x^2) = g.f. A000129(n+1) (Pell numbers without 0) and Fib(x)=1/(1-x-x^2) = g.f. A000045(n+1) (Fibonacci numbers without 0). %Y A054449 Cf. A000129, A000045, A054448. %K A054449 easy,nonn %O A054449 0,2 %A A054449 _Wolfdieter Lang_, Apr 27 2000