Number of length n arrays of permutations of 0..n-1 with each element moved by -4 to 4 places and every three consecutive elements having its maximum within 4 of its minimum.
A263699
Number of length n arrays of permutations of 0..n-1 with each element moved by -4 to 4 places and every three consecutive elements having its maximum within 4 of its minimum.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =24a(4) =120a(5) =168a(6) =204a(7) =348a(8) =696a(9) =1601a(10) =3476a(11) =7244a(12) =14048a(13) =27164a(14) =54300a(15) =109741a(16) =223641a(17) =452621a(18) =908389a(19) =1822758a(20) =3657710a(21) =7359642a(22) =14825163a(23) =29845108a(24) =60064056a(25) =120806672a(26) =242986234a(27) =488854773a(28) =983578792a(29) =1979138437
External references
- oeis: A263699