198114

Appears in sequences

• Numbers k such that the square of k is the concatenation of two numbers m and 4*m.at n=4A115536
• Number of n X 4 0..2 arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two exactly once.at n=6A268770
• Number of nX7 0..2 arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two exactly once.at n=3A268773