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%I #13 Jan 04 2024 15:11:55
%S 1,1,1,2,2,2,2,2,3,3,3,3,4,4,4,4,4,4,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,
%T 6,7,7,7,7,7,8,8,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,9,9,10,10,10,10,10,
%U 10,10,10,10,10,11,11,11,11,11,11,11,11,11,11,12
%N a(n) = maximal number of semicircles that pass through an intersection point in the configuration A290447(n).
%H Chai Wah Wu, <a href="/A290726/b290726.txt">Table of n, a(n) for n = 1..190</a>
%H M. F. Hasler, <a href="/A290447/a290447_1.svg">Illustration for A290447(9) = 124</a>. (First instance where a triple intersection occurs, whence a(9) = 3.)
%Y Cf. A290447.
%K nonn
%O 1,4
%A _N. J. A. Sloane_, Aug 10 2017
%E More terms from _Chai Wah Wu_, Aug 10 2017
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