a(n) = Sum_{k=0..floor(n/2)} k^(n-2*k) * Stirling2(n-k,k).
A353288
a(n) = Sum_{k=0..floor(n/2)} k^(n-2*k) * Stirling2(n-k,k).
Terms
- a(0) =1a(1) =0a(2) =1a(3) =1a(4) =2a(5) =7a(6) =30a(7) =139a(8) =723a(9) =4487a(10) =33551a(11) =289854a(12) =2774999a(13) =29016343a(14) =333139222a(15) =4232908176a(16) =59442337179a(17) =912948755487
External references
- oeis: A353288