1109760

Appears in sequences

• Number of reduced words of length n in Coxeter group on 17 generators S_i with relations (S_i)^2 = (S_i S_j)^4 = I.at n=5A163093
• Area A of the bicentric quadrilaterals such that A, the sides, the radius of the circumcircle and the radius of the incircle are integers.at n=27A219192
• Expansion of 60*x*(1 + 4*x + x^2) / (1 - x)^5.at n=15A316458