30161740

Appears in sequences

• a(n) = C(n)*(12n+1) where C(n) = Catalan numbers (A000108).at n=12A050491
• a(0) = 0; a(n) = C(2*n-2,n-1)*(n^2-2*n+2)/n for n >= 1.at n=13A180266