|
%I #14 Jun 10 2015 14:13:45
%S 0,0,0,0,2,24,228,2088,19732,197890,2131060,24729108,309027560,
%T 4148115048,59611031304,913915160628,14897443573244,257369478424890,
%U 4698494631208500,90393611677083892,1828153614233855024,38778554791649355232,860921156414834534368
%N Number of permutations of 1..n with number of rises (p(i+1)>p(i)) different from number of rises in the inverse permutation.
%H Vaclav Kotesovec, <a href="/A180388/b180388.txt">Table of n, a(n) for n = 0..200</a>
%Y a(n) + A180389(n) = n! = A000142(n).
%K nonn
%O 0,5
%A _Leroy Quet_, _D. S. McNeil_ and _R. H. Hardin_ in the Sequence Fans Mailing List Sep 01 2010
%E More terms from _Vaclav Kotesovec_, Jun 10 2015
%E a(0)=0 prepended by _Alois P. Heinz_, Jun 10 2015
|
