Number of permutations p of [n] such that five is the maximum of the number of elements in any integer interval [p(i)..i+n*[i<p(i)]].

A324632

Number of permutations p of [n] such that five is the maximum of the number of elements in any integer interval [p(i)..i+n*[i<p(i)]].

Terms

    a(0) =76a(1) =185a(2) =435a(3) =1001a(4) =2299a(5) =5320a(6) =12277a(7) =28337a(8) =65469a(9) =151401a(10) =350368a(11) =811513a(12) =1881187a(13) =4364213a(14) =10131903a(15) =23537656a(16) =54713385a(17) =127248885a(18) =296086085a(19) =689224889a(20) =1604944676a(21) =3738477553a(22) =8710572523a(23) =20300163281a(24) =47319366179a(25) =110319510400a(26) =257234285829a(27) =599872668089

External references