Number of (n+2) X 1 arrays of occupancy after each element moves up to +-n places including 0.

A222346

Number of (n+2) X 1 arrays of occupancy after each element moves up to +-n places including 0.

Terms

    a(0) =8a(1) =33a(2) =124a(3) =460a(4) =1714a(5) =6433a(6) =24308a(7) =92376a(8) =352714a(9) =1352076

External references