Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 king-move adjacent elements, with upper left element zero.

A298290

Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =29a(2) =26a(3) =46a(4) =130a(5) =233a(6) =448a(7) =877a(8) =1605a(9) =3284a(10) =6774a(11) =13516a(12) =26780a(13) =53260a(14) =107224a(15) =217210a(16) =438939a(17) =883313a(18) =1780573a(19) =3597643a(20) =7278676a(21) =14737316a(22) =29815736a(23) =60315844a(24) =122146302a(25) =247456532a(26) =501329145a(27) =1015919801a(28) =2058740283a(29) =4172450069

External references