Number of n X 4 binary arrays with all 1s connected, a path of 1s from left column to lower right corner, and no 1 having more than two 1s adjacent.
A163706
Number of n X 4 binary arrays with all 1s connected, a path of 1s from left column to lower right corner, and no 1 having more than two 1s adjacent.
Terms
- a(0) =1a(1) =11a(2) =63a(3) =259a(4) =896a(5) =2821a(6) =8515a(7) =24940a(8) =70944a(9) =196626a(10) =534162a(11) =1430008a(12) =3786133a(13) =9937397a(14) =25902833a(15) =67151065a(16) =173338487a(17) =445930356a(18) =1144130515a(19) =2929289696a(20) =7487194973a(21) =19111652812a(22) =48732676423a(23) =124159731735a(24) =316122564155a(25) =804460022994
External references
- oeis: A163706