885831

Appears in sequences

• Number of lattice paths from (0,0) to (n,n) with steps (0,1), (1,0) and, when on the diagonal, (1,1).at n=10A026671
• a(n) = T(n, floor(n/2)), T given by A026670.at n=20A026676
• a(n) = T(n, floor(n/2)), T given by A026736.at n=21A026742
• Self-convolution of array T given by A026670.at n=10A026981
• a(n) = greatest number in row n of array T given by A026736.at n=21A027214
• Expansion of 1/(1-x-x^3*c(x^3)), c(x) the g.f. of A000108.at n=31A165407