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 A127951 #2 Mar 30 2012 17:25:18 %S A127951 1,-1,2,-3,1,3,-5,-3,5,4,-7,-10,2,11,5,-9,-20,-10,15,19,6,-11,-33,-35, %T A127951 5,39,29,7,-13,-49,-77,-35,49,77,41,8,-15,-68,-140,-126,14,140,132,55, %U A127951 9,-17,-90,-228,-294,-126,168,300,207,71,10 %N A127951 Triangle, binomial transform of A126615. %C A127951 Row sums = 1 %F A127951 Binomial transform of A126615, as infinite lower triangular matrices. %e A127951 First few rows of the triangle are: %e A127951 1; %e A127951 -1, 2; %e A127951 -3, 1, 3; %e A127951 -5, -3, 5, 4; %e A127951 -7, -10, 2, 11, 5; %e A127951 -9, -20, -10, 15, 19, 6; %e A127951 -11, -33, -35, 5, 39, 29, 7; %e A127951 ... %Y A127951 Cf. A126615. %K A127951 tabl,sign %O A127951 1,3 %A A127951 _Gary W. Adamson_, Feb 09 2007