Number of 4 X n 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-1) or (-2,0) and new values introduced in order 0..2.

A274896

Number of 4 X n 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-1) or (-2,0) and new values introduced in order 0..2.

Terms

    a(0) =6a(1) =14a(2) =38a(3) =104a(4) =290a(5) =815a(6) =2291a(7) =6434a(8) =18065a(9) =50729a(10) =142469a(11) =400121a(12) =1123718a(13) =3155882a(14) =8863073a(15) =24891350a(16) =69905726a(17) =196325636a(18) =551367590a(19) =1548479459a(20) =4348802339a(21) =12213324374a(22) =34300315505a(23) =96330172385a(24) =270536931545a(25) =759785117405

External references