172833

Appears in sequences

• Number of ways to reciprocally link elements of an n X 3 array either to themselves or to exactly one horizontal, diagonal and antidiagonal neighbor.at n=6A220616
• T(n,k)=Number of ways to reciprocally link elements of an nXk array either to themselves or to exactly one horizontal, diagonal and antidiagonal neighbor.at n=42A220621
• Number of ways to reciprocally link elements of an 7Xn array either to themselves or to exactly one horizontal, diagonal and antidiagonal neighbor.at n=2A220626