a(n) = Sum_{k>=0} (1/2)^(k+1) * |Stirling1(n+k,k)|.
A390898
a(n) = Sum_{k>=0} (1/2)^(k+1) * |Stirling1(n+k,k)|.
Terms
- a(0) =1a(1) =2a(2) =20a(3) =328a(4) =7504a(5) =220448a(6) =7910720a(7) =335381632a(8) =16403174656a(9) =909119017472
External references
- oeis: A390898