Expansion of (1 + 2*x + x^2)/(1 - 10*x + x^2).

A004291

Expansion of (1 + 2*x + x^2)/(1 - 10*x + x^2).

Terms

    a(0) =1a(1) =12a(2) =120a(3) =1188a(4) =11760a(5) =116412a(6) =1152360a(7) =11407188a(8) =112919520a(9) =1117788012a(10) =11064960600a(11) =109531817988

External references