1854576

Appears in sequences

• Card-matching numbers (Dinner-Diner matching numbers).at n=30A059059
• Card-matching numbers (Dinner-Diner matching numbers).at n=23A059069
• Number of n X 2 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.at n=7A230520
• T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.at n=37A230526