Number of length n+3 0..4 arrays with every four consecutive terms having the maximum of some two terms equal to the minimum of the remaining two terms.
A249703
Number of length n+3 0..4 arrays with every four consecutive terms having the maximum of some two terms equal to the minimum of the remaining two terms.
Terms
- a(0) =205a(1) =485a(2) =1153a(3) =2601a(4) =5425a(5) =11925a(6) =27113a(7) =61725a(8) =137593a(9) =307437a(10) =694273a(11) =1576625a(12) =3567829a(13) =8061981a(14) =18257849a(15) =41462221a(16) =94184277a(17) =213859241a(18) =485808309a(19) =1104769313a(20) =2514006025a(21) =5722098441a(22) =13027345657a(23) =29673996009a(24) =67626829493
External references
- oeis: A249703