42873

Appears in sequences

• Number of 5-tuples of different integers from [ 2,n ] with no common factors among pairs.at n=44A015699
• Number of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,0 3,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.at n=6A155259
• Number of ways to reciprocally link elements of an 6Xn array either to themselves or to exactly two horizontal and antidiagonal neighbors, without consecutive collinear links.at n=7A220711
• Number of (n+1) X (4+1) 0..2 arrays with the minimum plus the upper median equal to the lower median plus the maximum in every 2 X 2 subblock.at n=7A235880
• Partial sums of A299287.at n=25A299288