Equals one maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..1 nX3 array.

A220534

Equals one maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..1 nX3 array.

Terms

    a(0) =4a(1) =5a(2) =55a(3) =322a(4) =1802a(5) =9888a(6) =54152a(7) =296677a(8) =1626316a(9) =8921034a(10) =48940217a(11) =268458544a(12) =1472546593a(13) =8077208658a(14) =44305328871a(15) =243025038817

External references