Expansion of e.g.f.: exp( x/(1-x)^2 ).

Terms

a(0) =1a(1) =1a(2) =5a(3) =31a(4) =241a(5) =2261a(6) =24781a(7) =309835a(8) =4342241a(9) =67308841a(10) =1141960501a(11) =21026890391a(12) =417264626065