a(n) = ((n+1)*2^n + 1)*(2^n + 1)^(n-1).
A171800
a(n) = ((n+1)*2^n + 1)*(2^n + 1)^(n-1).
Terms
- a(0) =1a(1) =5a(2) =65a(3) =2673a(4) =397953a(5) =228882753a(6) =520970490625
External references
- oeis: A171800
A171800
a(n) = ((n+1)*2^n + 1)*(2^n + 1)^(n-1).