25153536

Appears in sequences

• Number of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^15 = I.at n=24A167648
• a(n) = n * 2^(n - 2) * (2^(n - 1) - 1).at n=12A308700