Row sums of triangle A118185: a(n) = Sum_{k=0..n} 4^(k*(n-k)) for n>=0.
A118186
Row sums of triangle A118185: a(n) = Sum_{k=0..n} 4^(k*(n-k)) for n>=0.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =34a(4) =386a(5) =8706a(6) =395266a(7) =35659778a(8) =6476038146
External references
- oeis: A118186