78597

Appears in sequences

• a(n) = T(n,0) + T(n,1) + ... + T(n,n), T given by A027144.at n=12A027151
• Expansion of (1-x)/(1 + 6*x - 3*x^2).at n=6A099842
• Half the number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock diagonal sum differing from its antidiagonal sum by more than 3.at n=7A184223
• Half the number of (n+1)X9 0..3 arrays with every 2X2 subblock diagonal sum differing from its antidiagonal sum by more than 3.at n=0A184230
• T(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock diagonal sum differing from its antidiagonal sum by more than 3.at n=28A184231
• Number of septenary sequences of length n such that no two consecutive terms have distance 5.at n=6A287811