1485872

Appears in sequences

• Number of ways to reciprocally link elements of an n X n array either to themselves or to exactly two horizontal, diagonal or antidiagonal neighbors.at n=4A220719
• Number of ways to reciprocally link elements of an nX5 array either to themselves or to exactly two horizontal, diagonal or antidiagonal neighbors.at n=4A220722
• T(n,k)=Number of ways to reciprocally link elements of an nXk array either to themselves or to exactly two horizontal, diagonal or antidiagonal neighbors.at n=40A220725
• Number of ways to reciprocally link elements of an 5Xn array either to themselves or to exactly two horizontal, diagonal or antidiagonal neighbors.at n=4A220729