146205

Appears in sequences

• Number of permutations of 0..floor((n*7-1)/2) on even squares of an n X 7 array such that each row, column, diagonal and (downwards) antidiagonal of even squares is increasing.at n=6A215785
• Number of permutations of 0..floor((7*n-1)/2) on even squares of an 7*n array such that each row, column, diagonal and (downwards) antidiagonal of even squares is increasing.at n=6A215793
• Expansion of x*(1+2*x)/((1-2*x)*(1-x+4*x^2)).at n=17A335840