1886996681domain: NAppears in sequencesa(n) = T(2n-1,n-1) = T(2n,n+1), T given by A026725.at n=15A026674a(n) = T(n, floor(n/2)), T given by A026670.at n=31A026676Greatest number in row n of array T given by A026725.at n=31A026731Expansion of 1/(1-x*c(x)^3), c(x) the g.f. of A000108.at n=16A165201