1864456

Appears in sequences

• a(n) = n-th elementary symmetric function of the first n+1 positive integers congruent to 1 mod 3.at n=6A024216
• Triangle read by rows: T(n, k) is the Sheffer triangle ((1 - 3*x)^(-1/3), (-1/3)*log(1 - 3*x)). A generalized Stirling1 triangle.at n=29A286718