147696

Appears in sequences

• E.g.f: A(x) = f(x*A(x)), where f(x) = (1+2*x)*exp(x).at n=5A088692
• Triangular numbers that are sums of twin prime pairs.at n=19A165966
• Triangular arithmetic on half-squares: b(n)*(b(n) - 1)/2 where b(n) = floor(n^2/2).at n=33A227970
• Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 1 3 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 1 3 6 or 7.at n=6A252184
• Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 1 3 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 1 3 6 or 7.at n=6A252191
• Hexagonal numbers (A000384) in which parity of digits alternates.at n=24A297645
• Number of achiral colorings of the 6 square faces of a cube or the 6 vertices of a regular octahedron using n or fewer colors.at n=15A337898
• Triangular numbers that are palindromes in base 5.at n=11A350991