91180

Appears in sequences

• Indices of centered octagonal numbers (A016754) which are also centered triangular numbers (A005448).at n=5A253674
• T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no equal antidiagonal neighbors and new values introduced sequentially from 0.at n=30A265241
• Number of 3Xn arrays containing n copies of 0..3-1 with no equal antidiagonal neighbors and new values introduced sequentially from 0.at n=5A265242
• Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 6 king-move adjacent elements, with upper left element zero.at n=14A298052