Number of length n+3 0..3 arrays with every four consecutive terms having the maximum of some two terms equal to the minimum of the remaining two terms.
A249702
Number of length n+3 0..3 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) =100a(1) =208a(2) =440a(3) =896a(4) =1724a(5) =3440a(6) =7056a(7) =14544a(8) =29620a(9) =60416a(10) =124156a(11) =256448a(12) =529304a(13) =1091952a(14) =2255920a(15) =4669824a(16) =9673196a(17) =20037568a(18) =41516752a(19) =86070656a(20) =178513920a(21) =370298992a(22) =768179120a(23) =1593817584a(24) =3307416676a(25) =6864100336a(26) =14246134420
External references
- oeis: A249702