Number of strictly increasing arrangements of n nonzero numbers in -(n+1)..(n+1) with sum zero.
A188116
Number of strictly increasing arrangements of n nonzero numbers in -(n+1)..(n+1) with sum zero.
Terms
- a(0) =0a(1) =3a(2) =4a(3) =16a(4) =42a(5) =137a(6) =426a(7) =1398a(8) =4622a(9) =15594a(10) =53252a(11) =184060a(12) =642392a(13) =2261829a(14) =8024726a(15) =28664946a(16) =103015222a(17) =372234190a(18) =1351655526a(19) =4930080182a(20) =18055480464a(21) =66371559466a(22) =244817099870a(23) =905883648170
External references
- oeis: A188116