Number of n X 3 0..1 arrays with every element unequal to 0, 2, 3 or 6 king-move adjacent elements, with upper left element zero.

A304136

Number of n X 3 0..1 arrays with every element unequal to 0, 2, 3 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =7a(2) =5a(3) =9a(4) =15a(5) =16a(6) =33a(7) =57a(8) =62a(9) =133a(10) =231a(11) =256a(12) =549a(13) =953a(14) =1074a(15) =2281a(16) =3951a(17) =4524a(18) =9497a(19) =16409a(20) =19078a(21) =39581a(22) =68215a(23) =80488a(24) =165085a(25) =283801a(26) =339658a(27) =688993a(28) =1181567a(29) =1433652

External references