1520506

Appears in sequences

• Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,1,2,0,4 for x=0,1,2,3,4.at n=15A196906
• Number of arrays of 7 0..n integers with no sum of consecutive elements equal to a disjoint adjacent sum of an equal number of elements.at n=7A215194