223182

Appears in sequences

• Expansion of ( 1-x-x^2 ) / ( 1-2*x-2*x^2+x^3+x^4 ).at n=14A052960
• a(n) = Sum_{i+j+k=n, 0<=i<=j<=k<=n} (n+2k)!/(i! * j! * (3*k)!).at n=9A092468