Number of length n+3 0..3 arrays with no four consecutive terms having the maximum of any two terms equal to the minimum of the remaining two terms.
A250382
Number of length n+3 0..3 arrays with no four consecutive terms having the maximum of any two terms equal to the minimum of the remaining two terms.
Terms
- a(0) =156a(1) =432a(2) =1208a(3) =3384a(4) =9480a(5) =26578a(6) =74528a(7) =208998a(8) =586102a(9) =1643650a(10) =4609526a(11) =12927186a(12) =36253772a(13) =101672196a(14) =285136136a(15) =799654742a(16) =2242605598a(17) =6289313722a(18) =17638176794a(19) =49465700416a(20) =138724972590a(21) =389049740574
External references
- oeis: A250382