25491

Appears in sequences

• a(n) = (3*a(n-1)) XOR a(n-2).at n=10A210680
• Number of (w,x,y,z) with all terms in {0,...,n} and w=[R/2], where R=max{w,x,y,z}-min{w,x,y,z} and [ ]=floor.at n=30A212758
• Number of nX5 integer arrays with each element equal to the number of horizontal and vertical neighbors differing from itself by exactly one.at n=15A266078
• Number of 5Xn 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.at n=9A301967