3145716

Appears in sequences

• Triangle read by rows: T(n,k) = (n+1,k)-th element of (M^8-M)/7, where M is the infinite lower Pascal's triangle matrix, 1<=k<=n.at n=39A096042
• Number of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^20 = I.at n=21A168824
• Number of additive Z_2 Z_8 codes of a certain type (see Siap-Aydogdu for precise definition).at n=16A226264