25621596

Appears in sequences

• Binomial coefficients C(n,76).at n=5A017740
• Binomial coefficients C(81,n).at n=5A017797
• Triangle, read by rows, where T(n,k) = C( C(n+2,3) - C(k+2,3) + 1, n-k) for n>=k>=0.at n=30A126450
• Triangular matrix T where column 0 of T^m equals C(m*3^(n-1), n) at row n for n>=0, m>=0.at n=15A179430
• a(n) = binomial(3^(n-1), n).at n=5A179431