Number of Barlow packings with group P63/mmc(O) that repeat after 4n+2 layers.
A011947
Number of Barlow packings with group P63/mmc(O) that repeat after 4n+2 layers.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =7a(4) =14a(5) =31a(6) =63a(7) =123a(8) =255a(9) =511a(10) =1015a(11) =2047a(12) =4092
External references
- oeis: A011947