Number of length n arrays of permutations of 0..n-1 with each element moved by -3 to 3 places and with no two consecutive increases.

A263638

Number of length n arrays of permutations of 0..n-1 with each element moved by -3 to 3 places and with no two consecutive increases.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =17a(4) =41a(5) =75a(6) =156a(7) =340a(8) =738a(9) =1567a(10) =3327a(11) =7136a(12) =15258a(13) =32589a(14) =69621a(15) =148780a(16) =317987a(17) =679467a(18) =1451887a(19) =3102670a(20) =6630039a(21) =14167934a(22) =30275260a(23) =64695775a(24) =138248719a(25) =295425310a(26) =631295545a(27) =1349022959a(28) =2882734510a(29) =6160146104

External references