272629233

Appears in sequences

• a(n) = n*3^(n-4).at n=16A006234
• a(n) = 19*3^n.at n=15A176413
• (n-1)-st elementary symmetric function of the first n terms of the periodic sequence (3,1,3,1,3,1,3,1,...).at n=28A203231
• Triangle read by rows: T(n,k) is the number of occurrences of the periodic substring (0011)^k in the periodic string (000111)^n.at n=43A373628