346105

Appears in sequences

• Triangle read by rows: T(n, k) = binomial(3*n, k-1) + binomial(3*n, n-k).at n=28A156003
• Triangle read by rows: T(n, k) = binomial(3*n, k-1) + binomial(3*n, n-k).at n=35A156003
• a(n) = A255458(2^n-1).at n=10A255459
• Expansion of Sum_{k>=0} (x/(1 - x))^(k^3).at n=25A280351