|
%I #2 Sep 21 2005 03:00:00
%S 2,18,160,1530,14800,143386,1389432,13464130,130472968,1264337250,
%T 12251953552,118726523722,1150509376512,11148914193898,
%U 108037613809384,1046929395512082,10145181113692600,98311022950389682
%N Number of ways of packing a 3 X (2n-1) rectangle with dominoes, leaving one space unoccupied.
%F G.f.: ( (2x)(1+x-x^2)(1-4x+x^2))/((1-10x+3x^2)(1-x)^2))
%Y Cf. A001835.
%K easy,nonn
%O 1,1
%A Frans Clauwens (F.Clauwens(AT)science.ru.nl), Jun 09 2005
|
