a(n) = [x^n] Product_{k>=1} (1 + 2^n*x^k).
A292414
a(n) = [x^n] Product_{k>=1} (1 + 2^n*x^k).
Terms
- a(0) =1a(1) =2a(2) =4a(3) =72a(4) =272a(5) =2080a(6) =270400a(7) =2146432a(8) =33751296a(9) =403702272
External references
- oeis: A292414
A292414
a(n) = [x^n] Product_{k>=1} (1 + 2^n*x^k).