149981

Appears in sequences

• Sum of n-th row of triangle of 4th powers: 1; 1 16 1; 1 16 81 16 1; 1 16 81 256 81 16 1; ... (cf. A133824).at n=12A061803
• Constant term of the reduction by x^2->x+1 of the polynomial p(n,x) defined below in Comments.at n=21A192748
• Number of nX6 0..1 arrays with every element equal to 0, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=19A298915