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%I #7 Mar 02 2021 11:33:34
%S 2,8,42,148,438,936,2010,3462,6038,8816,14606,20504,29854,39790,54618,
%T 70142,92662,115718,147494,177500,223506,267872,326142,384274,460302,
%U 535896,631886,726674,848126,965592,1115194,1259926,1440558,1616940,1833130,2042602,2300498,2549756,2851626,3139854
%N The number of edges on a vesica piscis formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.
%C The terms are from numeric computation - no formula for a(n) is currently known.
%C See A341877 for images of the regions and A341878 for images of the vertices.
%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Vesica_piscis">Vesica piscis</a>.
%F a(n) = A341877(n) + A341878(n) - 1.
%Y Cf. A341877 (regions), A341878 (vertices), A342153 (n-gons), A135565, A332376, A340613, A340687.
%K nonn
%O 1,1
%A _Scott R. Shannon_ and _N. J. A. Sloane_, Mar 02 2021
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