40915

Appears in sequences

• Carlitz-Riordan q-Catalan numbers (recurrence version) for q=-6.at n=4A015102
• Triangle read by rows: T(n,k) = 1 + n! - k! - (n - k)! + k!*(n - k)!.at n=39A155453
• Triangle read by rows: T(n,k) = 1 + n! - k! - (n - k)! + k!*(n - k)!.at n=41A155453
• a(n) = 5*2^(n+1) - 3*(n+3).at n=12A169831
• Number of minimal idempotent generating sets for the singular part P_n \ S_n of the partition monoid P_n.at n=6A244491
• A(n,k) is the n-th Carlitz-Riordan q-Catalan number (recurrence version) for q = -k; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=59A290789