33272912

Appears in sequences

• Expansion of (1/x) * Series_Reversion( x / (1+x+x^4/(1+x)^3) ).at n=38A369592
• a(n) = (1/(4*n+3)) * Sum_{k=0..n} (4*k+3) * binomial(4*n+3,n-k).at n=9A390778