Number of nX3 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300501
Number of nX3 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =3a(1) =2a(2) =4a(3) =7a(4) =6a(5) =17a(6) =34a(7) =57a(8) =80a(9) =164a(10) =302a(11) =526a(12) =885a(13) =1647a(14) =2996a(15) =5296a(16) =9259a(17) =16753a(18) =30075a(19) =53468a(20) =94738a(21) =169873a(22) =303898a(23) =541631a(24) =964444a(25) =1724067a(26) =3079837a(27) =5493915a(28) =9797538a(29) =17495715
External references
- oeis: A300501