196840

Appears in sequences

• a(n) = (n+1)*(2*n+1)*(3*n+1)*(4*n+1).at n=9A011245
• a(n) = floor(n*(n-1)*(n-2)*(n-3)/9).at n=38A011919
• Expansion of e.g.f. (1-9*x)^(-1/9), 9-factorial numbers.at n=5A045756
• Nonuple factorial, 9-factorial, n!9, n!!!!!!!!!.at n=37A114806
• a(n) = {n^2}_n.at n=45A122635
• Duplicate of A045756.at n=5A144772
• Triangle T(n,k) represents the coefficients of (x^10*d/dx)^n, where n=1,2,3,...;generalization of Stirling numbers of second kind A008277, Lah-numbers A008297.at n=10A223512
• Least number in A349898 divisible by the n-th prime.at n=11A349899
• Square table read by downward antidiagonals: n-th row has e.g.f. (1-9*x)^(-n/9).at n=22A392037