A188632 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A188632

Size of optimal DNA code of length n and minimal distance 1 over alphabet of size 4.

%I #6 Mar 30 2012 16:52:01

%S 1,4,12,44,160,640,2240,8912,32256

%N Size of optimal DNA code of length n and minimal distance 1 over alphabet of size 4.

%C See Sun et al. reference for precise definition.

%D J. Sun, S. Houghten and J. Ross, Edit metric codes with combinatorial DNA constraints, Congessus Numerant., 204 (2010), 65-92 (see Table 1).

%F One bisection appears to be A098400.

%K nonn

%O 1,2

%A _N. J. A. Sloane_, Apr 05 2011