Number of -n..n arrays x(0..8) of 9 elements with zero sum and nonzero first and second differences.
A200461
Number of -n..n arrays x(0..8) of 9 elements with zero sum and nonzero first and second differences.
Terms
- a(0) =34a(1) =18692a(2) =548204a(3) =5876818a(4) =36725772a(5) =163058296a(6) =572857272a(7) =1697721154a(8) =4418429664a(9) =10383073842a(10) =22471124198a(11) =45437973772a(12) =86792210440a(13) =157952348940a(14) =275717978586a(15) =464147942094a(16) =756885155284
External references
- oeis: A200461