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 A119021 #3 Mar 30 2012 18:36:57 %S A119021 1,2,5,14,44,152,564,2200,8922,37460,162526,726772,3337360,15676000, %T A119021 75057142,365302740,1803191210,9011209620,45528658362,232340523516, %U A119021 1196799936312,6219980254704,32605664415000,172351828064208 %N A119021 Binomial transform of A119020. %C A119021 A119020 is the eigenvector of triangle A055151 of Motzkin polynomial coefficients. %Y A119021 Cf. A119020, A119022. %K A119021 nonn %O A119021 0,2 %A A119021 _Paul D. Hanna_, May 09 2006