Number of n X 2 0..1 arrays with every element both equal and not equal to some elements at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
A278274
Number of n X 2 0..1 arrays with every element both equal and not equal to some elements at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
Terms
- a(0) =0a(1) =2a(2) =5a(3) =16a(4) =49a(5) =153a(6) =476a(7) =1483a(8) =4619a(9) =14388a(10) =44817a(11) =139601a(12) =434844a(13) =1354499a(14) =4219139a(15) =13142228a(16) =40936825a(17) =127514425a(18) =397195644a(19) =1237227707a(20) =3853849915a(21) =12004386164a(22) =37392552993a(23) =116474345313a(24) =362806816604
External references
- oeis: A278274