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 A245168 #8 Feb 12 2019 04:06:42 %S A245168 1,0,1,0,1,1,0,3,8,3,0,13,63,63,13,0,663,4938,9038,4938,663,0,17,177, %T A245168 502,502,177,17 %N A245168 Triangle read by rows: coefficients of the polynomials A_{1,5}(n,k). %H A245168 J. Agapito, <a href="https://dx.doi.org/10.1016/j.laa.2014.03.018">On symmetric polynomials with only real zeros and nonnegative gamma-vectors</a>, Linear Algebra and its Applications, Volume 451, 15 June 2014, Pages 260-289. %e A245168 Triangle begins: %e A245168 1, %e A245168 0,1, %e A245168 0,1,1, %e A245168 0,3,8,3, %e A245168 0,13,63,63,13, %e A245168 0,663,4938,9038,4938,663, %e A245168 0,17,177,502,502,177,17, %e A245168 ... %Y A245168 Cf. A245167, A245169, A245170, A245171, A245172, A245173. %K A245168 nonn,tabl,more %O A245168 0,8 %A A245168 _N. J. A. Sloane_, Jul 13 2014