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%I M1282 #33 Jun 17 2022 16:15:09
%S 1,1,1,2,4,14,57,347,2375,20752,200805,2293192,28097136,381963696,
%T 5651257984,87997162749,1478237810536,26259254617337,491527066667949,
%U 9640606422165480
%N Necklace permutations.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H H. W. Gould, <a href="/A002998/a002998.pdf">Letters to N. J. A. Sloane, 1974</a>.
%H D. E. Knuth, <a href="http://dx.doi.org/10.2307/2318994">Computer science and its relation to mathematics</a>, Amer. Math. Monthly, 81 (1974), 323-343. doi: 10.2307/2318994.
%H D. E. Knuth, H. Wilf, C. L. Mallows, & D. Klarner, <a href="/A003322/a003322.pdf">Correspondence, 1994</a>,
%H <a href="/index/Ne#necklaces">Index entries for sequences related to necklaces</a>.
%K nonn,more,nice
%O 1,4
%A _N. J. A. Sloane_
%E Corrected and extended by _Don Knuth_, Nov 15 1995
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