Number of n X 2 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally, vertically or antidiagonally.
A232935
Number of n X 2 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally, vertically or antidiagonally.
Terms
- a(0) =6a(1) =12a(2) =26a(3) =56a(4) =120a(5) =258a(6) =554a(7) =1190a(8) =2556a(9) =5490a(10) =11792a(11) =25328a(12) =54402a(13) =116850a(14) =250982a(15) =539084a(16) =1157898a(17) =2487048a(18) =5341928a(19) =11473922a(20) =24644826a(21) =52934598a(22) =113698172a(23) =244212194a(24) =524543136a(25) =1126665696a(26) =2419964162a(27) =5197838690a(28) =11164432710
External references
- oeis: A232935