Number of permutations of length n that possess the maximal sum of distances between contiguous elements.

A328378

Number of permutations of length n that possess the maximal sum of distances between contiguous elements.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =2a(5) =8a(6) =8a(7) =48a(8) =72a(9) =576a(10) =1152a(11) =11520a(12) =28800a(13) =345600a(14) =1036800a(15) =14515200a(16) =50803200a(17) =812851200a(18) =3251404800a(19) =58525286400a(20) =263363788800

External references