G.f.: A(x) = Sum_{n>=0} x^n*A(x)^A001969(n+1), where A001969 lists numbers with an even number of 1's in their binary expansion.
A195262
G.f.: A(x) = Sum_{n>=0} x^n*A(x)^A001969(n+1), where A001969 lists numbers with an even number of 1's in their binary expansion.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =21a(4) =125a(5) =805a(6) =5459a(7) =38403a(8) =277667a(9) =2050771a(10) =15405655a(11) =117344350a(12) =904175038a(13) =7035182178a(14) =55197856415a(15) =436221495843
External references
- oeis: A195262