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 5 of its minimum.

A263748

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 5 of its minimum.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =24a(4) =120a(5) =504a(6) =930a(7) =1794a(8) =3852a(9) =9246a(10) =24613a(11) =69414a(12) =185540a(13) =475520a(14) =1173888a(15) =2874864a(16) =7141844a(17) =18113441a(18) =46245953a(19) =118174785a(20) =300561681a(21) =759840542a(22) =1915350786a(23) =4833118568a(24) =12216213910a(25) =30929782130a(26) =78368738162a(27) =198501078760

External references