Number of nondecreasing arrangements of n numbers x(i) in -(2n-2)..(2n-2) with the sum of sign(x(i))*x(i)^2 zero.
A187993
Number of nondecreasing arrangements of n numbers x(i) in -(2n-2)..(2n-2) with the sum of sign(x(i))*x(i)^2 zero.
Terms
- a(0) =1a(1) =3a(2) =5a(3) =34a(4) =117a(5) =862a(6) =5443a(7) =43750a(8) =354103a(9) =3099873a(10) =27848450a(11) =258912232a(12) =2459308291a(13) =23849609290a(14) =235048481924
External references
- oeis: A187993