42220035

Appears in sequences

• Expansion of 1/(1-3*x)^8; 8-fold convolution of A000244 (powers of 3).at n=8A036221
• a(n) = (0^n + 3^n*binomial(2*n,n))/2.at n=8A098401
• Numerator of (3/4)^n * binomial(2*n,n).at n=8A285008