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 A342152 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. 3
 2, 8, 42, 148, 438, 936, 2010, 3462, 6038, 8816, 14606, 20504, 29854, 39790, 54618, 70142, 92662, 115718, 147494, 177500, 223506, 267872, 326142, 384274, 460302, 535896, 631886, 726674, 848126, 965592, 1115194, 1259926, 1440558, 1616940, 1833130, 2042602, 2300498, 2549756, 2851626, 3139854 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The terms are from numeric computation - no formula for a(n) is currently known. See A341877 for images of the regions and A341878 for images of the vertices. LINKS Wikipedia, Vesica piscis. FORMULA a(n) = A341877(n) + A341878(n) - 1. CROSSREFS Cf. A341877 (regions), A341878 (vertices), A342153 (n-gons), A135565, A332376, A340613, A340687. Sequence in context: A052447 A226458 A330870 * A153537 A153565 A153528 Adjacent sequences:  A342149 A342150 A342151 * A342153 A342154 A342155 KEYWORD nonn AUTHOR Scott R. Shannon and N. J. A. Sloane, Mar 02 2021 STATUS approved

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Last modified November 28 04:13 EST 2021. Contains 349400 sequences. (Running on oeis4.)