Number of length 2+3 0..n arrays with no four consecutive terms having the maximum of any two terms equal to the minimum of the remaining two terms.
A250388
Number of length 2+3 0..n 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) =6a(1) =78a(2) =432a(3) =1560a(4) =4350a(5) =10206a(6) =21168a(7) =40032a(8) =70470a(9) =117150a(10) =185856a(11) =283608a(12) =418782a(13) =601230a(14) =842400a(15) =1155456a(16) =1555398a(17) =2059182a(18) =2685840a(19) =3456600a(20) =4395006a(21) =5527038a(22) =6881232a(23) =8488800a(24) =10383750a(25) =12603006a(26) =15186528a(27) =18177432a(28) =21622110a(29) =25570350
External references
- oeis: A250388