Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 0 1 vertically.

A208023

Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 0 1 vertically.

Terms

    a(0) =6a(1) =36a(2) =102a(3) =279a(4) =741a(5) =1995a(6) =5404a(7) =14555a(8) =39180a(9) =105688a(10) =284961a(11) =767907a(12) =2070021a(13) =5580470a(14) =15042195a(15) =40547128a(16) =109300950a(17) =294632265a(18) =794208105a(19) =2140875657a(20) =5770963528a(21) =15556228121a(22) =41933454712a(23) =113036097920a(24) =304700733021

External references