Number of n X 2 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
A280155
Number of n X 2 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =0a(1) =4a(2) =8a(3) =18a(4) =40a(5) =92a(6) =208a(7) =470a(8) =1060a(9) =2384a(10) =5352a(11) =11992a(12) =26824a(13) =59906a(14) =133592a(15) =297510a(16) =661720a(17) =1470062a(18) =3262264a(19) =7231940a(20) =16016596a(21) =35439722a(22) =78349800a(23) =173074816a(24) =382029988a(25) =842648168a(26) =1857362384a(27) =4091321478a(28) =9006604780a(29) =19815365450
External references
- oeis: A280155