Number of length n arrays of permutations of 0..n-1 with each element moved by -7 to 7 places and every three consecutive elements having its maximum within 5 of its minimum.

A263751

Number of length n arrays of permutations of 0..n-1 with each element moved by -7 to 7 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) =720a(6) =2400a(7) =5424a(8) =7872a(9) =13426a(10) =32600a(11) =93648a(12) =264004a(13) =715068a(14) =1827984a(15) =4478968a(16) =10877260a(17) =27046668a(18) =68563740a(19) =175638421a(20) =449813745a(21) =1144182205a(22) =2889559249a(23) =7280740314a(24) =18358582526a(25) =46400942072a(26) =117521209250a(27) =297858254334

External references