Self-dual codes over F2 + uF2 with an automorphism of odd order

We complete the classification of all Lee-extremal and Lee-optimal self-dual codes over F2 + uF2 of lengths 9 through 20 that have a nontrivial odd order automorphism begun in [W.C. Huffman, On the decomposition of self-dual codes over F2 + uF2 with an automorphism of odd prime order, Finite Fields Appl., in press]. Along the way, we find all Lee-extremal self-dual codes over F2 + uF2 of lengths 9 through 11. © 2007 Published by Elsevier Inc.