The number of irreducible zero-sum subsets of T(n) = {-2*n+1, -2*n+3, ..., -3, -1, 1, 3, ..., 2*n-3, 2*n-1} that contain -2*n+1 but not 2*n-1.
A390083
The number of irreducible zero-sum subsets of T(n) = {-2*n+1, -2*n+3, ..., -3, -1, 1, 3, ..., 2*n-3, 2*n-1} that contain -2*n+1 but not 2*n-1.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =3a(5) =6a(6) =14a(7) =30a(8) =62a(9) =115a(10) =200a(11) =351a(12) =622a(13) =1125a(14) =2050a(15) =3673a(16) =6351a(17) =10731a(18) =17538a(19) =27758a(20) =42971a(21) =65002a(22) =96469a(23) =141963a(24) =207006a(25) =300417a(26) =436184a(27) =633784a(28) =919745a(29) =1337895
External references
- oeis: A390083