31689

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, -1), (-1, -1, 0), (-1, -1, 1), (-1, 1, 0), (1, 0, 0)}.at n=12A148045
• Number of (w,x,y,z) with all terms in {1,...,n} and w^2<=x*y*z.at n=14A212065
• Number of n X 3 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.at n=5A293082
• T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.at n=33A293087
• Number of 6 X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.at n=2A293092
• Number of tilings of a 20 X n rectangle using 2*n copies of the disconnected shape [ooooo_____ooooo].at n=38A322473