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 A192251 #16 Sep 08 2022 08:45:57 %S A192251 0,2,8,48,258,1518,8910,53526,323796,1976876,12138456,74921904, %T A192251 464320368,2887660168,18011618368,112633305568,705899650498, %U A192251 4432668783838,27882818399038,175661366346838,1108193133814138,6999963827434378,44265660573879298 %N A192251 1-sequence of reduction of central binomial coefficient sequence by x^2 -> x+1. %C A192251 See A192232, A192250. %F A192251 a(n) = 2*A192070(n). %F A192251 Conjecture: (n-1)*(n-2)*a(n) -(5*n-7)*(n-2)*a(n-1) -2*(2*n-3)*(3*n-8)*a(n-2) +4*(2*n-3)*(2*n-5)*a(n-3)=0. - _R. J. Mathar_, May 04 2014 %F A192251 a(n) = Sum_{i=0..n-1} A000045(i)*binomial(2*i, i). - _John M. Campbell_, Feb 01 2016 %t A192251 (See A192250.) %t A192251 Table[Sum[Fibonacci[i] Binomial[2 i, i], {i, 0, n - 1}], {n, 23}] (* _Michael De Vlieger_, Feb 01 2016 *) %o A192251 (Magma) [&+[Fibonacci(k)*Binomial(2*k,k): k in [0..n]]: n in [0..28]]; // _Vincenzo Librandi_, Feb 04 2016 %Y A192251 Cf. A192232, A192250, A192070. %K A192251 nonn %O A192251 1,2 %A A192251 _Clark Kimberling_, Jun 27 2011