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%I #6 Oct 25 2017 18:06:49
%S 1,159,7564,245964,6996588,193799140,5489211751,162272284974,
%T 5047554996855,165595774518042,5728636935767404,208700950019470460,
%U 7993330299623656154,321268248361695869991,13525506763517368392668,595415097485805608016210,27361311228606445955339071
%N Number of linear chord diagrams having n chords and minimal chord length seven.
%H Alois P. Heinz, <a href="/A293920/b293920.txt">Table of n, a(n) for n = 7..405</a>
%F a(n) ~ (exp(-6) - exp(-7)) * 2^(n + 1/2) * n^n / exp(n). - _Vaclav Kotesovec_, Oct 25 2017
%Y Column k=7 of A293881.
%K nonn
%O 7,2
%A _Alois P. Heinz_, Oct 19 2017
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