19960

Appears in sequences

• Number of n-digit 7-smooth numbers (A002473).at n=21A085630
• 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, 1), (-1, 0, 0), (0, -1, 1), (0, 1, -1), (1, 0, 1)}.at n=9A148933
• Number of arrangements of 3 nonzero numbers x(i) in -n..n with the sum of floor(x(i)/x(i+1)) equal to zero.at n=26A189499
• Number of n X 5 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=10A201274
• Number of 2 X 2 matrices having all terms in {-n,...,0,...,n} and determinant n-1.at n=35A211141
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 270", based on the 5-celled von Neumann neighborhood.at n=43A271089
• Numbers k such that prime(k) divides primorial(j) + 1 for exactly three integers j.at n=3A283928