Coefficient of x^n in the expansion of 1 / (1-x-x^2)^(2*n).
A370617
Coefficient of x^n in the expansion of 1 / (1-x-x^2)^(2*n).
Terms
- a(0) =1a(1) =2a(2) =14a(3) =98a(4) =726a(5) =5522a(6) =42770a(7) =335512a(8) =2656998a(9) =21195944a(10) =170076214a(11) =1371181110a(12) =11098310730a(13) =90128497032a(14) =734008622872
External references
- oeis: A370617