291732

Appears in sequences

• Sum of numbers that can be written as t*n + u*(n+1) for nonnegative integers t,u in exactly one way.at n=22A076454
• Number of reduced words of length n in Coxeter group on 24 generators S_i with relations (S_i)^2 = (S_i S_j)^4 = I.at n=4A163174
• Number of (n+2) X (2+2) 0..1 arrays with no 3 X 3 subblock diagonal sum 0 and no antidiagonal sum 3 and no row sum 0 or 3 and no column sum 0 or 3.at n=20A258960