Number of (n+3)X1 arrays of occupancy after each element moves up to +-n places but not 0.
A222557
Number of (n+3)X1 arrays of occupancy after each element moves up to +-n places but not 0.
Terms
- a(0) =4a(1) =64a(2) =359a(3) =1562a(4) =6220a(5) =24024a(6) =92011a(7) =352258a(8) =1351519
External references
- oeis: A222557