Expansion of 1/sqrt(1-12x-12x^2).

Terms

a(0) =1a(1) =6a(2) =60a(3) =648a(4) =7344a(5) =85536a(6) =1014336a(7) =12182400a(8) =147702528a(9) =1803907584a(10) =22159733760a(11) =273508669440