2184000

Appears in sequences

• Triangle S(n,k) by rows: coefficients of 5^((n-1)/2)*(x^(1/5)*d/dx)^n when n is odd, and of 5^(n/2)*(x^(4/5)*d/dx)^n when n is even.at n=37A223171
• Triangle S(n,k) by rows: coefficients of 5^((n-1)/2)*(x^(1/5)*d/dx)^n when n=1,3,5,...at n=17A223529
• T(n,k) is the number of connected labeled posets with n elements and rank k: triangle read by rows.at n=24A342501
• Numbers k such that k | A002129(k).at n=8A348583