74397180

Appears in sequences

• 1/512 of 11th unsigned column of triangle A053120 (T-Chebyshev, rising powers, zeros omitted).at n=21A054334
• Expansion of (1+6x)/(1-x)^10.at n=21A055994
• a(n) = binomial(3*n,n)*(5*n+2)/(2*n+1).at n=10A249691