T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, without consecutive moves in the same direction.

A221886

T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, without consecutive moves in the same direction.

Terms

    a(0) =1a(1) =3a(2) =3a(3) =6a(4) =33a(5) =6a(6) =13a(7) =326a(8) =326a(9) =13a(10) =28a(11) =3223a(12) =11878a(13) =3223a(14) =28a(15) =60a(16) =31832a(17) =449069a(18) =449069a(19) =31832a(20) =60a(21) =129a(22) =314426a(23) =16834526a(24) =65039658a(25) =16834526a(26) =314426a(27) =129a(28) =277a(29) =3105733

External references