139456

Appears in sequences

• Number of arrays of median of three adjacent elements of some length n+2 0..5 array, with no adjacent equal elements in the latter.at n=7A229009
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally.at n=21A232839
• Number of (1+1) X (n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally.at n=6A232840
• Difference between upper and lower member of a pair of adjacent perfect powers A340700 and A340701, both with exponents > 2.at n=33A340706
• a(n) = n! * Sum_{k=0..floor(n/2)} (k+1)^(k-1) / (2^k * k! * (n-2*k)!).at n=9A362524