2105156

Appears in sequences

• G.f.: ( x - 3*x^2 + 6*x^3 - 8*x^4 + 4*x^5 - x^7 ) / (1 - 4*x + 6*x^2 - 5*x^3 + 2*x^4 + x^5 - x^6 + x^7 ).at n=26A083839