Sum over all compositions of 2n into n parts of the least common multiple of the parts.
A373865
Sum over all compositions of 2n into n parts of the least common multiple of the parts.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =50a(4) =160a(5) =892a(6) =3794a(7) =19560a(8) =80112a(9) =371948a(10) =1614598a(11) =7180494a(12) =30794746a(13) =134269410a(14) =574754496a(15) =2471353090a(16) =10542096528a(17) =45057428356a(18) =191653403306a(19) =814082549052
External references
- oeis: A373865