So ... I'm assuming that the corresponding sequences permitting only 1 and 2 are already in OEIS? For necklaces as well as bracelets? For reversible and irreversible chains of beads ("opened" bracelets and necklaces)? On Wed, Dec 7, 2011 at 4:55 PM, Adam P. Goucher <apgoucher@gmx.com> wrote:
Numerology: is it sheer coincidence that "this" plus "that" also equals 88?
Indeed. For the 2-bead version of this problem (using 180° and 360° components), 'this' is 3, 'that' is 1, and the sum is 4 (not 2).
Sincerely,
Adam P. Goucher
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