Number of n X 2 arrays containing 2 copies of 0..n-1 with no equal vertical neighbors and new values introduced sequentially from 0.
A265229
Number of n X 2 arrays containing 2 copies of 0..n-1 with no equal vertical neighbors and new values introduced sequentially from 0.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =43a(4) =372a(5) =4027a(6) =51871a(7) =773186a(8) =13083385a(9) =247698481a(10) =5186925696a(11) =119023766737
External references
- oeis: A265229