Number of ways to write 1 as ordered sum of n powers of 1/2, allowing repeats.
A007178
Number of ways to write 1 as ordered sum of n powers of 1/2, allowing repeats.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =13a(4) =75a(5) =525a(6) =4347a(7) =41245a(8) =441675a(9) =5259885a(10) =68958747a(11) =986533053a(12) =15292855019a(13) =255321427725
External references
- oeis: A007178