Number of permutations of 1..2*n+4 with each element displaced by at least n.

A183247

Number of permutations of 1..2*n+4 with each element displaced by at least n.

Terms

    a(0) =265a(1) =1708a(2) =13365a(3) =114124a(4) =998112a(5) =8751552a(6) =76915200a(7) =677461056a(8) =5979015552a(9) =52866428352a(10) =468241962240

External references