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A066316 Number of identity (asymmetric) bracelets (or necklaces) with n red and blue beads such that the beads switch colors when bracelet is turned over. 1

%I #6 Mar 30 2012 17:37:12

%S 1,5,24,91,340,1224,4365,15521,55311,197964,712243,2577105,9375360,

%T 34284971,125977464,464938189,1722817415,6407307543,23909159417,

%U 89491715105,335908316844,1264097675775,4768430557020,18027183349395

%N Number of identity (asymmetric) bracelets (or necklaces) with n red and blue beads such that the beads switch colors when bracelet is turned over.

%H <a href="/index/Br#bracelets">Index entries for sequences related to bracelets</a>

%F a(n)=A022553(n)-A066315(n)

%K nonn

%O 4,2

%A _Christian G. Bower_, Dec 13 2001

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Last modified April 18 04:56 EDT 2024. Contains 371767 sequences. (Running on oeis4.)