Number of n X 3 0..1 arrays with every element equal to 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

A298836

Number of n X 3 0..1 arrays with every element equal to 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =3a(2) =9a(3) =21a(4) =127a(5) =513a(6) =2440a(7) =11458a(8) =53727a(9) =254534a(10) =1202650a(11) =5692243a(12) =26943691a(13) =127540324a(14) =603796896a(15) =2858444154a(16) =13532486972a(17) =64065914939a(18) =303303284790

External references