Number of length n+2 0..5 arrays with no three unequal elements in a row and new values 0..5 introduced in 0..5 order.
A243636
Number of length n+2 0..5 arrays with no three unequal elements in a row and new values 0..5 introduced in 0..5 order.
Terms
- a(0) =4a(1) =9a(2) =21a(3) =51a(4) =127a(5) =324a(6) =844a(7) =2243a(8) =6073a(9) =16736a(10) =46892a(11) =133443a(12) =385277a(13) =1127352a(14) =3339464a(15) =10003395a(16) =30269129a(17) =92422160a(18) =284470820a(19) =881804563a(20) =2750412037a(21) =8625112792a(22) =27174303856a(23) =85960269683a(24) =272856760081a(25) =868664396112
External references
- oeis: A243636