Number of -n..n arrays x(0..7) of 8 elements with zero sum and nonzero second differences.
A200558
Number of -n..n arrays x(0..7) of 8 elements with zero sum and nonzero second differences.
Terms
- a(0) =362a(1) =21626a(2) =266812a(3) =1689732a(4) =7286542a(5) =24378976a(6) =68263780a(7) =167521092a(8) =371147726a(9) =758120242a(10) =1449515972a(11) =2623194882a(12) =4532144132a(13) =7526204850a(14) =12076969112a(15) =18807807576a(16) =28527996642a(17) =42270457652a(18) =61336410730a(19) =87344689150
External references
- oeis: A200558