Number of 2 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.
A285751
Number of 2 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.
Terms
- a(0) =0a(1) =4a(2) =8a(3) =44a(4) =150a(5) =540a(6) =2042a(7) =7760a(8) =29654a(9) =114336a(10) =442152a(11) =1713832a(12) =6655764a(13) =25893236a(14) =100873154a(15) =393455752a(16) =1536357188a(17) =6005069488a(18) =23492496948a(19) =91979426392a(20) =360391230046
External references
- oeis: A285751