315020

Appears in sequences

• a(0) = 1, a(n) = 20*sigma[3](n).at n=25A091983
• Expansion of (4*x^3-7*x^2+4*x-1)/(x^6-4*x^5+4*x^4+x^3-7*x^2+5*x-1).at n=13A271180
• Expansion of (1/x) * Series_Reversion( x * (1 - x^2 / (1 - x)^2)^2 ).at n=11A389693