Number of n X 2 0..1 arrays with each 1 adjacent to 2, 3 or 5 king-move neighboring 1s.

A296957

Number of n X 2 0..1 arrays with each 1 adjacent to 2, 3 or 5 king-move neighboring 1s.

Terms

    a(0) =1a(1) =6a(2) =16a(3) =31a(4) =96a(5) =301a(6) =801a(7) =2261a(8) =6746a(9) =19456a(10) =55751a(11) =162436a(12) =472621a(13) =1368341a(14) =3971361a(15) =11541726a(16) =33504416a(17) =97254351a(18) =282443176a(19) =820183901a(20) =2381405001a(21) =6915014781a(22) =20080097266a(23) =58307232656a(24) =169309052471a(25) =491636470476

External references