Number of nondecreasing arrangements of n numbers x(i) in -(n+2)..(n+2) with the sum of sign(x(i))*x(i)^2 zero.
A187997
Number of nondecreasing arrangements of n numbers x(i) in -(n+2)..(n+2) with the sum of sign(x(i))*x(i)^2 zero.
Terms
- a(0) =1a(1) =5a(2) =8a(3) =34a(4) =88a(5) =421a(6) =1696a(7) =8373a(8) =40681a(9) =211234a(10) =1111148a(11) =5987390a(12) =32752144a(13) =181900825a(14) =1022304310a(15) =5807285713a(16) =33301251729a(17) =192592146915
External references
- oeis: A187997