1573889

Appears in sequences

• Dirichlet convolution of [ 1,1,1,... ] with A034778.at n=13A034779
• Number of n X 4 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 and every value within 3 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.at n=15A253000