39591

Appears in sequences

• a(n) = Sum_{k>=1} floor(tau^(n-k)) where tau is A001622.at n=20A020956
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 0), (0, 0, 1), (1, 0, 1), (1, 1, -1)}.at n=8A150556
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 675", based on the 5-celled von Neumann neighborhood.at n=30A273408