427520

Appears in sequences

• Number of walks of length n on one 60-degree wedge of the equilateral triangular lattice. The walk can go along the walls of the wedge, but cannot cross the walls.at n=9A129400
• Triangle read by rows, T(n,k) for 0<=k<=n, generalizes the colored Motzkin paths of A129400.at n=45A201641
• Number of (6+2) X (n+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 2 3 6 or 7.at n=10A252538
• Product_{n>=1} (1 + a(n)*x^n/n!) = 1 + tanh(x).at n=9A353779