a(n) = Sum_{k=0..n} (n - k)! * (n - 1)^k. Row sums of A350269.
A350268
a(n) = Sum_{k=0..n} (n - k)! * (n - 1)^k. Row sums of A350269.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =22a(4) =168a(5) =1720a(6) =22670a(7) =368784a(8) =7134148a(9) =159416704a(10) =4027395330a(11) =113235212800
External references
- oeis: A350268