Number of 3Xn arrays containing n copies of 0..3-1 with no element plus any vertical neighbor equal to 3-1.

A265864

Number of 3Xn arrays containing n copies of 0..3-1 with no element plus any vertical neighbor equal to 3-1.

Terms

    a(0) =2a(1) =22a(2) =152a(3) =1462a(4) =13772a(5) =139144a(6) =1431824a(7) =15086614a(8) =161254844a(9) =1745205892a(10) =19070813984a(11) =210091931944

External references