Search: id:A027805
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%I A027805
%S A027805 126,1470,9240,41580,150150,462462,1261260,3123120,7147140,15315300,
%T A027805 31039008,59961720,111105540,198470580,343219800,576609264,943854450,
%U A027805 1509157650,2362159800,3626122500,5468192730
%N A027805 21*(n+1)*C(n+4,9).
%F A027805 Number of 14-subsequences of [ 1, n ] with just 4 contiguous pairs; g.f. 
               42*(3+2x)/(1-x)^11
%F A027805 C(n+6, 6)*C(n+9, 4) - Zerinvary Lajos (zlaja(AT)freemail.hu), May 25 
               2005
%Y A027805 Sequence in context: A104678 A154093 A002953 this_sequence A027814 A109146 
               A133499
%Y A027805 Adjacent sequences: A027802 A027803 A027804 this_sequence A027806 A027807 
               A027808
%K A027805 nonn
%O A027805 0,1
%A A027805 thi ngoc dinh (via rkg(AT)cpsc.ucalgary.ca)

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