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 A136789 #10 Jun 05 2023 07:03:36 %S A136789 1,0,2,1,-1,5,1,4,-5,15,4,2,17,-23,52,11,17,2,79,-109,203,41,46,80, %T A136789 -20,397,-544,877,162,198,208,418,-244,2134,-2876,4140,715,841,1031, %U A136789 994,2389,-2053,12196,-16113,21147,3425,4014,4663,5771,4950,14693,-15819,73798,-95495,115975 %N A136789 Triangle read by rows: A007318^(-1) * A011971. %C A136789 Row sums and right border = the Bell numbers (A000110) starting (1, 2, 5, 15, 52, 203, ...). %F A136789 Binomial transform of the Aitken array A011971. %e A136789 First few rows of the triangle: %e A136789 1; %e A136789 0, 2; %e A136789 1, -1, 5; %e A136789 1, 4, -5, 15; %e A136789 4, 2, 17, -23, 52; %e A136789 11, 17, 2, 79, -109, 203; %e A136789 41, 46, 80, -20, 397, -544, 877; %e A136789 ... %Y A136789 Cf. A000110, A011971, A130595. %K A136789 tabl,sign %O A136789 1,3 %A A136789 _Gary W. Adamson_, Jan 21 2008 %E A136789 a(52) corrected by _Georg Fischer_, Jun 05 2023