227960

Appears in sequences

• Number of n X n X n triangular binary arrays with no three 1's adjacent in a row in any of the three triangular directions.at n=5A183277
• Expansion of b(2)*b(4)/(1 - 2*x - 2*x^3 + 3*x^4), where b(k) = (1-x^k)/(1-x).at n=15A266367