A103442 - OEIS

%I #6 Mar 30 2012 18:37:44

%S 1,2,4,6,11,16,27,44,73,124,199,372,613,1142,1874,3926,6209,13660,

%T 21539,46240,80142

%N Row sums of A103441. Number of two-colored bracelets of n beads with different sets of distances among the white beads.

%t (* see A103441 *) Table[Length[Union[(dist[f[ #1], n]&)/@Flatten[Table[ListNecklaces[n, Join[1+0*Range[i], 0*Range[n-i]], Dihedral], {i, 1, n-1}], 1]]], {n, 2, 16}]

%Y Cf. A103441, A056342.

%K hard,nonn

%O 2,2

%A _Wouter Meeussen_, Feb 06 2005

%E a(21) & a(22) from _Robert G. Wilson v_, Aug 09 2010