86701

Appears in sequences

• Number of nX3 0..3 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.at n=3A224386
• T(n,k)=Number of nXk 0..3 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.at n=18A224391
• Number of 4Xn 0..3 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.at n=2A224393
• a(n) = Sum_{x_1|n, x_2|n, x_3|n, x_4|n, x_5|n} gcd(x_1,x_2,x_3,x_4,x_5).at n=35A344139