19795288

Appears in sequences

• Expansion of (1-x)*(1+x)/(1-x-2*x^2+x^4).at n=27A052535
• a(n) is its own 4th difference.at n=13A055990
• A trisection of 1/(1-x-x^4).at n=18A099234
• a(n) = Sum_{k=0..2*n} binomial(3*k,2*n-k).at n=9A392431