Unchanging value maps: number of n X 3 binary arrays indicating the locations of corresponding elements unequal to no horizontal, diagonal or antidiagonal neighbor in a random 0..2 n X 3 array.
A219137
Unchanging value maps: number of n X 3 binary arrays indicating the locations of corresponding elements unequal to no horizontal, diagonal or antidiagonal neighbor in a random 0..2 n X 3 array.
Terms
- a(0) =4a(1) =18a(2) =78a(3) =331a(4) =1400a(5) =5949a(6) =25277a(7) =107353a(8) =455938a(9) =1936500a(10) =8224877a(11) =34933256a(12) =148370893a(13) =630171269a(14) =2676507659a(15) =11367850562a(16) =48282330086a(17) =205068091043a(18) =870979546682
External references
- oeis: A219137