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A028496 Erroneous version of A152455. 1

%I #13 Feb 12 2023 06:03:26

%S 1,2,2,4,2,6,4,6,4,12,4,12

%N Erroneous version of A152455.

%C Original title: Lowest dimension in which rotational symmetry of order n is possible for an infinite regular set of points.

%C The value a(11)=12 in Goodman and O'Rourke is incorrect. - _Sean A. Irvine_, Feb 02 2020

%D J. E. Goodman and J. O'Rourke, editors, Handbook of Discrete and Computational Geometry, CRC Press, 1997, p. 935.

%K dead

%O 2,2

%A _N. J. A. Sloane_

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Last modified November 28 22:38 EST 2023. Contains 367422 sequences. (Running on oeis4.)