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 A143318 #8 Jun 06 2023 07:25:39 %S A143318 1,2,-1,3,-1,-1,4,-3,0,0,5,-1,-1,-1,-1,6,-6,-2,1,1,1,7,-1,-1,-1,-1,-1, %T A143318 -1,8,-7,0,0,0,0,0,0,9,-4,-4,0,0,0,0,0,0,10,-8,-2,-2,-2,1,1,1,1,1,11, %U A143318 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,12,-16,-4,3,3,3,0,0,0,0,0,0,13,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 %N A143318 Triangle read by rows: A143317 * A000012. %C A143318 Right border = mu(n), A008683. %C A143318 Row sums = 1. %F A143318 By rows, partial sums of A143317 terms starting from the right. %e A143318 First few rows of the triangle: %e A143318 1; %e A143318 2, -1; %e A143318 3, -1, -1; %e A143318 4, -3, 0, 0; %e A143318 5, -1, -1, -1, -1; %e A143318 6, -6, -2, 1, 1, 1; %e A143318 7, -1, -1, -1, -1, -1, -1; %e A143318 ... %Y A143318 Cf. A008683, A143317. %K A143318 tabl,sign %O A143318 1,2 %A A143318 _Gary W. Adamson_, Aug 07 2008 %E A143318 a(73) = 0, a(78) = 0 corrected and more terms from _Georg Fischer_, Jun 06 2023