1973258

Appears in sequences

• Equals two maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to exactly two of their king-move neighbors in a random 0..3 nX3 array.at n=6A220340
• T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their king-move neighbors in a random 0..3 nXk array.at n=38A220342
• Expansion of Product_{k>=1} 1/(1 + x^k)^(sigma_2(k)).at n=31A288422