Number of n X 3 0..1 arrays with every element unequal to 0, 1, 3, 4 or 8 king-move adjacent elements, with upper left element zero.

A305247

Number of n X 3 0..1 arrays with every element unequal to 0, 1, 3, 4 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =7a(2) =10a(3) =17a(4) =34a(5) =65a(6) =121a(7) =244a(8) =502a(9) =1023a(10) =2112a(11) =4430a(12) =9384a(13) =20081a(14) =43341a(15) =94137a(16) =205643a(17) =451538a(18) =995569a(19) =2202392a(20) =4885309a(21) =10860185a(22) =24185234a(23) =53936572a(24) =120423583a(25) =269112504a(26) =601825056a(27) =1346656482a(28) =3014688479a(29) =6751281413

External references