469556

Appears in sequences

• Number of distinct solutions of Sum_{i=1..3}(x(2i-1)*x(2i)) = 0 (mod n), with x() in 0..n-1.at n=27A180795
• Expansion of (1/x) * Series_Reversion( x*(1-x)^3/(1-x-x^3) ).at n=9A366084