Number of -3..3 arrays of length n with the sum ahead of each element differing from the sum following that element by 3 or less.
A221962
Number of -3..3 arrays of length n with the sum ahead of each element differing from the sum following that element by 3 or less.
Terms
- a(0) =7a(1) =49a(2) =175a(3) =833a(4) =3647a(5) =16513a(6) =73983a(7) =332801a(8) =1495039a(9) =6719489a(10) =30195711a(11) =135700481a(12) =609828863a(13) =2740551681a(14) =12315918335a(15) =55347249153a(16) =248728256511
External references
- oeis: A221962