194485

Appears in sequences

• a(n) = n^4+4 = (n^2-2*n+2)*(n^2+2*n+2) = ((n-1)^2+1)*((n+1)^2+1).at n=21A057781
• 1/6 the number of colorings of an n X n square array with 6 colors.at n=2A068256
• Number of n X 3 0..5 arrays with no entry increasing mod 6 by 5 rightwards or downwards, starting with upper left zero.at n=2A222276
• T(n,k) = number of n X k 0..5 arrays with no entry increasing mod 6 by 5 rightwards or downwards, starting with upper left zero.at n=12A222281