Number of horizontal, vertical and diagonal neighbor colorings of the even squares of an n X 4 array with new integer colors introduced in row major order.
A215955
Number of horizontal, vertical and diagonal neighbor colorings of the even squares of an n X 4 array with new integer colors introduced in row major order.
Terms
- a(0) =1a(1) =4a(2) =29a(3) =313a(4) =6150a(5) =145563a(6) =5219070a(7) =208181894a(8) =11412814314a(9) =670592486703
External references
- oeis: A215955