Permutation decoding for binary self-dual codes from the graph Q_n where n is even

The binary self-dual [2ⁿ, 2^n-1, n]₂ codes from the adjacency matrices of the n-cubes Q_n, where n ≥ 6 and is even, are examined and 2- and 3-PD-sets of size n2ⁿ are found.