Number of nondecreasing arrangements of n nonzero numbers in -(n-1)..(n-1) with sum zero.
A188325
Number of nondecreasing arrangements of n nonzero numbers in -(n-1)..(n-1) with sum zero.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =10a(4) =40a(5) =197a(6) =980a(7) =5142a(8) =27632a(9) =152191a(10) =853564a(11) =4863492a(12) =28075992a(13) =163920550a(14) =966421928a(15) =5746596806a(16) =34428962746a(17) =207654949801
External references
- oeis: A188325