38780

Appears in sequences

• Aliquot sequence starting at 276.at n=18A008892
• T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 3 4 6 or 7.at n=15A252544
• Number of (1+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 3 4 6 or 7.at n=5A252545
• G.f.: x * (d/dx) x * Product_{k>=1} (1 + x^k)^(a(k)/k).at n=13A308433
• a(n) = 10*binomial(n,5) + 6*binomial(n,4) + binomial(n,3) + binomial(n,2).at n=15A380445