492156392

Appears in sequences

• a(n) = binomial(2n+1, n+1)*binomial(n+3, 3).at n=11A085374
• a(0) = 0, a(1) = 1 and a(n) = 6*a(n-1)/(n-1) + 4*a(n-2) for n > 1.at n=23A305032