a(n) = Sum_{k=1..n} binomial(n+1, k+1)*A000272(k).
A392286
a(n) = Sum_{k=1..n} binomial(n+1, k+1)*A000272(k).
Terms
- a(0) =0a(1) =1a(2) =4a(3) =13a(4) =51a(5) =301a(6) =2668a(7) =31865a(8) =473077a(9) =8347321a(10) =170297766a(11) =3940771165a(12) =101950138447
External references
- oeis: A392286