Number of length n arrays of permutations of 0..n-1 with each element moved by -3 to 3 places and every three consecutive elements having its maximum within 5 of its minimum.
A263747
Number of length n arrays of permutations of 0..n-1 with each element moved by -3 to 3 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) =78a(5) =230a(6) =506a(7) =1128a(8) =2641a(9) =6655a(10) =17261a(11) =46066a(12) =119052a(13) =300864a(14) =750728a(15) =1876024a(16) =4711588a(17) =11951068a(18) =30392680a(19) =77225565a(20) =195701321a(21) =494881594a(22) =1249924470a(23) =3159185418a(24) =7992133318a(25) =20232067074a(26) =51226594151a(27) =129680774266
External references
- oeis: A263747