Number of -n..n arrays x(0..6) of 7 elements with zeroth through 6th differences all nonzero.
A199948
Number of -n..n arrays x(0..6) of 7 elements with zeroth through 6th differences all nonzero.
Terms
- a(0) =2a(1) =2490a(2) =63260a(3) =672866a(4) =3879760a(5) =16261206a(6) =52799912a(7) =146068736a(8) =354811296a(9) =782544732a(10) =1588743870a(11) =3033145320a(12) =5471502126a(13) =9441265238a(14) =15658407444a(15) =25110211642
External references
- oeis: A199948