Number of 3 X n 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally, diagonally or antidiagonally.
A232922
Number of 3 X n 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally, diagonally or antidiagonally.
Terms
- a(0) =27a(1) =54a(2) =246a(3) =912a(4) =3612a(5) =13992a(6) =54600a(7) =212544a(8) =828048a(9) =3225120a(10) =12562464a(11) =48931776a(12) =190594944a(13) =742387008a(14) =2891677248a(15) =11263389888a(16) =43872104640a(17) =170886518976a(18) =665621195712
External references
- oeis: A232922