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 A106346 #12 May 21 2022 08:43:55 %S A106346 1,0,1,0,-1,1,0,0,0,1,0,1,-1,-1,1,0,0,0,-1,0,1,0,0,0,0,0,-1,1,0,0,0,0, %T A106346 0,0,0,1,0,-1,1,1,-1,1,-1,-1,1,0,0,0,1,0,-1,0,-1,0,1,0,0,0,0,0,1,-1,0, %U A106346 0,-1,1,0,0,0,0,0,0,0,-1,0,0,0,1,0,0,0,0,0,0,0,0,0,1,-1,-1,1,0,0,0,0,0,0,0,0,0,0,0,-1 %N A106346 Inverse of number triangle A106344. %C A106346 Rows sums are A036987 (conjecture). %H A106346 George Beck and Karl Dilcher, <a href="https://arxiv.org/abs/2106.10400">A Matrix Related to Stern Polynomials and the Prouhet-Thue-Morse Sequence</a>, arXiv:2106.10400 [math.CO], 2021. See (1.8) p. 3. %e A106346 Triangle begins %e A106346 1 %e A106346 0 1 %e A106346 0 -1 1 %e A106346 0 0 0 1 %e A106346 0 1 -1 -1 1 %e A106346 0 0 0 -1 0 1 %e A106346 0 0 0 0 0 -1 1 %e A106346 0 0 0 0 0 0 0 1 %e A106346 0 -1 1 1 -1 1 -1 -1 1 %e A106346 0 0 0 1 0 -1 0 -1 0 1 %e A106346 0 0 0 0 0 1 -1 0 0 -1 1 %e A106346 0 0 0 0 0 0 0 -1 0 0 0 1 %e A106346 0 0 0 0 0 0 0 0 0 1 -1 -1 1 %Y A106346 Cf. A036987, A106344. %K A106346 easy,sign,tabl %O A106346 0,1 %A A106346 _Paul Barry_, Apr 29 2005 %E A106346 Example corrected by _Philippe Deléham_, Jul 17 2012