34872

Appears in sequences

• Matrix square of triangle A063967.at n=45A091700
• Column 0 of triangle A091700.at n=9A091702
• Number of linear arrangements of n blue, n red and n green items such that there are no adjacent items of the same color (first and last elements considered as adjacent).at n=5A110707
• Number of physical trees of alkane structures with n carbon vertices.at n=8A135106
• Arises in covering a graph by forests and a matching.at n=22A179259
• Number of length n arrays x(i), i=1..n with x(i) in 0..i and no value appearing more than 3 times.at n=6A248837
• T(n,k)=Number of length n arrays x(i), i=1..n with x(i) in 0..i and no value appearing more than k times.at n=42A248842
• T(n,k) = number of circular arrays of n 1's, n -1's, and k 0's such that no two adjacent elements are equal.at n=42A283614
• Number of nX4 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 1 or 4 neighboring 1s.at n=4A297678
• T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 1 or 4 neighboring 1s.at n=32A297682
• Number of 5Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 1 or 4 neighboring 1s.at n=3A297685
• Number of connected dominating sets in the n-Lucas cube graph.at n=5A370573
• Number of minimum dominating sets in the n X n X n grid graph.at n=3A383435
• Numbers w + x + y + z where (w,x,y,z) are nonnegative solutions to the Diophantine equation w^2 + x^2 + y^2 + z^2 = w*x*y*z.at n=13A385713