-3229

Appears in sequences

• Numerators of coefficients for numerical differentiation.at n=3A002554
• Expansion of Product_{k>=1} (1-x^(3*k-1))^(3*k-1) * (1-x^(3*k-2))^(3*k-2).at n=26A285247
• Triangle read by rows: T(n, k) = numerator(CF(n, k)) where CF(n, k) = n! * [x^k] [t^n] (t/2 + sqrt(1 + (t/2)^2))^(2*x).at n=48A370705