Number of permutations of 1..n with the number moved left exceeding the number moved right by 1.

A179562

Number of permutations of 1..n with the number moved left exceeding the number moved right by 1.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =4a(4) =31a(5) =146a(6) =1289a(7) =7736a(8) =85831a(9) =641302a(10) =8732989a(11) =78432212a(12) =1270475155a(13) =13338831858a(14) =250740220345

External references