Number of arrays of n integers in -5..5 with sum zero and equal numbers of elements greater than zero and less than zero.
A201808
Number of arrays of n integers in -5..5 with sum zero and equal numbers of elements greater than zero and less than zero.
Terms
- a(0) =1a(1) =11a(2) =31a(3) =571a(4) =2651a(5) =42821a(6) =263201a(7) =3688091a(8) =27050251a(9) =343631641a(10) =2832605381a(11) =33728463781a(12) =300829918741
External references
- oeis: A201808