Number of length n+2 0..5 arrays with no three unequal elements in a row and no three equal elements in a row and new values 0..5 introduced in 0..5 order.
A243724
Number of length n+2 0..5 arrays with no three unequal elements in a row and no three equal elements in a row and new values 0..5 introduced in 0..5 order.
Terms
- a(0) =3a(1) =6a(2) =12a(3) =25a(4) =53a(5) =116a(6) =259a(7) =594a(8) =1389a(9) =3322a(10) =8087a(11) =20057a(12) =50512a(13) =129132a(14) =334290a(15) =875527a(16) =2315597a(17) =6177950a(18) =16603417a(19) =44905650a(20) =122094567a(21) =333458152a(22) =914121383a(23) =2513767379a(24) =6930585550a(25) =19149215940a(26) =53003518044a(27) =146926107661a(28) =407775615941
External references
- oeis: A243724