a(n) = S(5,n), where S(r,n) = Sum_{k = 0..floor(n/2)} ( binomial(n,k) - binomial(n,k-1) )^r.
A361887
a(n) = S(5,n), where S(r,n) = Sum_{k = 0..floor(n/2)} ( binomial(n,k) - binomial(n,k-1) )^r.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =33a(4) =276a(5) =4150a(6) =65300a(7) =1083425a(8) =20965000a(9) =399876876a(10) =8461219032a(11) =178642861782
External references
- oeis: A361887