Number of -n..n arrays x(0..7) of 8 elements with zero sum and nonzero first and second differences.
A200460
Number of -n..n arrays x(0..7) of 8 elements with zero sum and nonzero first and second differences.
Terms
- a(0) =22a(1) =5478a(2) =103726a(3) =820650a(4) =4062384a(5) =14923636a(6) =44716536a(7) =115516220a(8) =266427776a(9) =562116652a(10) =1103746930a(11) =2042412926a(12) =3596047852a(13) =6069519806a(14) =9877920686a(15) =15574753386a(16) =23883962076a(17) =35735712652a(18) =52308828350a(19) =75077488038
External references
- oeis: A200460