Number of permutations p of [2n] such that n is the maximum of 0 and the number of elements in any integer interval [p(i)..i+2n*[i<p(i)]].
A324638
Number of permutations p of [2n] such that n is the maximum of 0 and the number of elements in any integer interval [p(i)..i+2n*[i<p(i)]].
Terms
- a(0) =1a(1) =1a(2) =1a(3) =18a(4) =215a(5) =5320a(6) =173111a(7) =8041166a(8) =483906047a(9) =37296199680
External references
- oeis: A324638