40475

Appears in sequences

• Triangle T, read by rows, where row n equals row (n-1) of matrix power T^(n(n+1)/2) concatenated with a trailing '1', for n>0, with T(0,0) = 1.at n=15A126465
• Column 0 of triangle A126465.at n=5A126466
• Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, 0), (0, -1), (0, 1), (1, -1)}.at n=11A151262
• G.f.: (x+x^3+x^4)/(1-x-x^3-2*x^4).at n=21A236392
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 517", based on the 5-celled von Neumann neighborhood.at n=34A272732