Number of strictly increasing arrangements of n numbers in -(n+3)..(n+3) with sum zero.
A188177
Number of strictly increasing arrangements of n numbers in -(n+3)..(n+3) with sum zero.
Terms
- a(0) =1a(1) =5a(2) =18a(3) =69a(4) =252a(5) =920a(6) =3370a(7) =12346a(8) =45207a(9) =165821a(10) =609734a(11) =2247151a(12) =8300708a(13) =30734578a(14) =114067100a(15) =424306230a(16) =1581788460a(17) =5909243454a(18) =22120325320a(19) =82963636468a(20) =311732564498
External references
- oeis: A188177