Number of (n+4)X6 binary arrays with every 1 having exactly three king-move neighbors equal to 1 but with no 2X2 blocks of 1s.
A183459
Number of (n+4)X6 binary arrays with every 1 having exactly three king-move neighbors equal to 1 but with no 2X2 blocks of 1s.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =19a(4) =59a(5) =309a(6) =685a(7) =2317a(8) =11977a(9) =30233a(10) =100967a(11) =487017a(12) =1346535a(13) =4415577a(14) =20064829a(15) =59544721a(16) =192599471a(17) =834177897a(18) =2615131807a(19) =8381181591a(20) =34942101463a(21) =114237573931a(22) =364096901303
External references
- oeis: A183459