E.g.f.: Sum_{n>=0} 2^(-n*(n+1)/2!) * Product_{k=0..n} tan(2^k*x).
A194456
E.g.f.: Sum_{n>=0} 2^(-n*(n+1)/2!) * Product_{k=0..n} tan(2^k*x).
Terms
- a(0) =1a(1) =2a(2) =8a(3) =64a(4) =976a(5) =23072a(6) =808688a(7) =48448384a(8) =5085859456a(9) =787587828992
External references
- oeis: A194456