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 A205945 #11 May 27 2021 10:47:47 %S A205945 1,1,2,1,7,2,1,20,12,2,1,54,53,16,2,1,143,208,88,20,2,1,376,768,415, %T A205945 130,24,2,1,986,2734,1804,700,180,28,2 %N A205945 Triangle read by rows related to A001700. %C A205945 Row sums = A001700: (1, 3, 10, 35, 126, 462, ...). %F A205945 Bisection of triangle A191314 extracting odd numbered rows. Accessing odd numbered columns of A205573, take finite differences of terms from the top -> down. %e A205945 First few rows of the triangle = %e A205945 1; %e A205945 1, 2; %e A205945 1, 7, 2; %e A205945 1, 20, 12, 2; %e A205945 1, 54, 53, 16, 2; %e A205945 1, 143, 208, 88, 20, 2; %e A205945 1, 376, 768, 415, 130, 24, 2; %e A205945 1, 986, 2734, 1804, 700, 180, 28, 2; %e A205945 ... %e A205945 Row 3 = (1, 7, 2) = row 5 of triangle A191314; and finite differences of column 5 of triangle A205573: (1, 8, 10, ...). %Y A205945 Cf. A001700, A191314, A205573. %K A205945 nonn,tabl %O A205945 1,3 %A A205945 _Gary W. Adamson_, Feb 01 2012