317548

Appears in sequences

• Expansion of (1/x) * Series_Reversion( x / (1+x+x^4/(1+x)^3) ).at n=29A369592
• Number of achiral noncrossing partitions composed of n blocks of size 4.at n=15A369930
• a(n) = (1/(2*n+1)) * Sum_{k=0..n} (2*k+1) * binomial(4*n+2,n-k).at n=7A390776