Number of nX3 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 0 1 vertically.

A207264

Number of nX3 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 0 1 vertically.

Terms

    a(0) =6a(1) =36a(2) =82a(3) =193a(4) =488a(5) =1087a(6) =2305a(7) =4932a(8) =10416a(9) =21716a(10) =45333a(11) =94798a(12) =198291a(13) =415803a(14) =874740a(15) =1845166a(16) =3902324a(17) =8273999a(18) =17581622a(19) =37429453a(20) =79812519a(21) =170419522a(22) =364296166a(23) =779456642a(24) =1669010171a(25) =3575965948a(26) =7665561753a(27) =16438759769

External references