a(n) = coefficient of x^n in A(x) such that: A(x)^2 = A( x^2/(1 - 4*x - 4*x^2) ).
A357547
a(n) = coefficient of x^n in A(x) such that: A(x)^2 = A( x^2/(1 - 4*x - 4*x^2) ).
Terms
- a(0) =1a(1) =2a(2) =9a(3) =38a(4) =176a(5) =832a(6) =4039a(7) =19938a(8) =99861a(9) =506042a(10) =2590099a(11) =13370898a(12) =69540016a(13) =364028992a(14) =1916585714a(15) =10142059868a(16) =53911982971a(17) =287736310102
External references
- oeis: A357547