# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a180154 Showing 1-1 of 1 %I A180154 #3 Mar 31 2012 12:35:45 %S A180154 2,4,8,36,160,848,5792,41712,338688,2902464,30968064,346316544, %T A180154 4034119680,48892557312,707976364032 %N A180154 Number of permutations of 0..(n-1) with the sum of the maximum of each adjacent pair = n*(n-1)/2 + floor((n-1)^2/8) %K A180154 nonn %O A180154 2,1 %A A180154 _R. H. Hardin_, Aug 13 2010 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE