27362

Appears in sequences

• 1-sequence of reduction of triangular number sequence by x^2 -> x+1.at n=12A192245
• Number of (n+1) X (n+1) 0..2 arrays with every 2 X 2 subblock diagonal maximum plus antidiagonal minimum unequal to its neighbors horizontally, vertically and ne+sw antidiagonally.at n=2A253399
• Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock diagonal maximum plus antidiagonal minimum unequal to its neighbors horizontally, vertically and ne+sw antidiagonally.at n=2A253402
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock diagonal maximum plus antidiagonal minimum unequal to its neighbors horizontally, vertically and ne+sw antidiagonally.at n=12A253407
• a(0) = 1; thereafter a(n) = 2*(6*n^2 - 3*n + 1).at n=48A386477