31302

Appears in sequences

• 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, 0, 0), (0, 1, 0), (1, 0, 1), (1, 1, -1)}.at n=8A150288
• a(n) = A000041(n) + n*A032741(n).at n=39A168015
• Number of compositions of n such that the maximal distance between two identical parts equals three.at n=19A262196
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 318", based on the 5-celled von Neumann neighborhood.at n=42A271252
• Number of connected T_0 set-systems on n vertices.at n=4A326948