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 A082906 #10 Oct 26 2019 20:44:26
%S A082906 1,2,4,8,12,32,22,128,140,350,294,2048,1638,8192,4890,15878,32908,
%T A082906 131072,81184,524288,493582,1165676,1393770,8388608,5771318,26910682,
%U A082906 23162026,89478836,131854546,536870912,352862112,2147483648,2147516556
%N A082906 Sum of terms in n-th row of modified Pascal's triangle displayed in A082905.
%C A082906 In A082905, all binomial coefficients C(n,j) are replaced by C(n/g, j/g), where g=gcd(n,j); a(n) = Sum_{j=0..n-1} C(n/g, j/g).
%e A082906 a(0)=1; a(12) = 1 + 12 + 6 + 4 + 3 + 792 + 2 + 792 + 3 + 4 + 6 + 12 + 1 = 1638.
%t A082906 Table[Apply[Plus, Table[Binomial[n/GCD[n, j], j/GCD[n, j]], {j, 0, n}]], {n, 0, 32}]
%Y A082906 Cf. A000005, A007318, A056045, A082905.
%K A082906 nonn
%O A082906 0,2
%A A082906 _Labos Elemer_, Apr 23 2003