87878

Appears in sequences

• Numbers k such that k and k^2 use only the digits 2, 4, 5, 7 and 8.at n=18A137097
• Number of n X 3 0..3 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.at n=4A224168
• T(n,k) = number of n X k 0..3 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.at n=25A224173
• Number of 5 X n 0..3 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.at n=2A224176