27242

Appears in sequences

• Expansion of g.f.: (1+x-sqrt(1-2*x-7*x^2-8*x^3-4*x^4))/(2*(1+x+x^2)).at n=10A108630
• Number of (n+2) X (1+2) 0..3 arrays with every 3 X 3 subblock row and column sum 3 or 6 and every diagonal and antidiagonal sum not 3 or 6.at n=5A251772
• Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row and column sum 3 or 6 and every diagonal and antidiagonal sum not 3 or 6.at n=0A251777
• T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum 3 or 6 and every diagonal and antidiagonal sum not 3 or 6.at n=15A251779
• T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum 3 or 6 and every diagonal and antidiagonal sum not 3 or 6.at n=20A251779
• Least inverse of A073454: Smallest m such that m divided by the primes up to m have exactly n repeated residues.at n=23A274320