Number of -n..n arrays x(0..8) of 9 elements with zero sum and no two neighbors summing to zero.
A199838
Number of -n..n arrays x(0..8) of 9 elements with zero sum and no two neighbors summing to zero.
Terms
- a(0) =66a(1) =23206a(2) =645780a(3) =6715618a(4) =41008804a(5) =179213048a(6) =622300326a(7) =1827026482a(8) =4719970500a(9) =11025201168a(10) =23740333870a(11) =47800415256a(12) =90973748554a(13) =165038447302a(14) =287293180292a(15) =482460245532a(16) =785043786046
External references
- oeis: A199838