Number of strictly increasing arrangements of n nonzero numbers in -(n+3)..(n+3) with sum zero.
A188118
Number of strictly increasing arrangements of n nonzero numbers in -(n+3)..(n+3) with sum zero.
Terms
- a(0) =0a(1) =5a(2) =12a(3) =51a(4) =172a(5) =624a(6) =2216a(7) =7970a(8) =28660a(9) =103599a(10) =375854a(11) =1368883a(12) =5003340a(13) =18351050a(14) =67525962a(15) =249235562a(16) =922567826a(17) =3424217898a(18) =12741735980a(19) =47526320684a(20) =177671217830a(21) =665611279282
External references
- oeis: A188118