a(n) = Sum_{1<=k<=n, gcd(n,k)=1} (-1)^(n-k)*Stirling1(n,k).
A096314
a(n) = Sum_{1<=k<=n, gcd(n,k)=1} (-1)^(n-k)*Stirling1(n,k).
Terms
- a(0) =1a(1) =1a(2) =5a(3) =12a(4) =119a(5) =135a(6) =5039a(7) =20160a(8) =240219a(9) =1545075a(10) =39916799a(11) =88550154a(12) =6227020799a(13) =42798202447a(14) =698726730520
External references
- oeis: A096314