49956

Appears in sequences

• Expansion of 1/(1-x-x^2+x^3-x^4).at n=27A124280
• G.f. A(x) satisfies: A(x)^2 = 1/AGM(1, 1 - 8*x/A(x)^2 ).at n=20A158122
• A quadrisection of A158122: a(n) = A158122(4n).at n=5A158212
• Number of (n+2)X(2+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 0 2 4 5 7 or 9.at n=6A251646
• Number of (n+2)X(7+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 0 2 4 5 7 or 9.at n=1A251651
• T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 0 2 4 5 7 or 9.at n=29A251652
• T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 0 2 4 5 7 or 9.at n=34A251652
• Numbers that are the sum of seven fourth powers in exactly nine ways.at n=35A345831
• a(n) = prime(n)^2 + prime(n+1).at n=47A352851