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 A144336 #6 Jun 02 2025 00:35:28 %S A144336 1,3,1,1,4,3,3,-1,7,5,1,6,-2,10,7,3,-3,14,-4,13,9,1,8,-11,26,-7,16,11, %T A144336 3,-5,25,-29,43,-11,19,13,1,10,-24,62,-62,66,-16,22,15,3,-7,40,-78, %U A144336 134,-116,96,-22,25,17 %N A144336 Triangle read by rows, 2*A144328 - A007318^(-1). %C A144336 Row sums = A003682: (1, 4, 8, 14, 22, 32, 44,...). %F A144336 Twice triangle A144328 minus the inverse of Pascal's triangle. %e A144336 First few rows of the triangle = %e A144336 1; %e A144336 3, 1; %e A144336 1, 4, 3 %e A144336 3, -1, 7, 5; %e A144336 1, 6, -2, 10, 7; %e A144336 3, -3, 14, -4, 13, 9; %e A144336 1, 8, -11, 26, -7, 16, 11; %e A144336 3, -5, 25, -29, 43, -11, 19, 13; %e A144336 ... %Y A144336 A144328, Cf. A003682 %K A144336 tabl,sign %O A144336 1,2 %A A144336 _Gary W. Adamson_ & Roger L. Bagula, Sep 18 2008