a(n) = Sum_{k=0..n} binomial(binomial(n, k), k).
A358496
a(n) = Sum_{k=0..n} binomial(binomial(n, k), k).
Terms
- a(0) =1a(1) =2a(2) =3a(3) =7a(4) =24a(5) =176a(6) =2623a(7) =79479a(8) =5141566a(9) =669156932a(10) =178757299486
External references
- oeis: A358496