0,2

On a 2n X (n^2 - n + 1) X n^2 cuboid (with n >= 3) there are six pairs of points with the maximum surface distance between them: the four pairs of opposite corners and the opposite pairs of points on the smallest faces 1 in from the mid-points of the shortest edges; this maximum surface distance is sqrt(a(n)).

Source

For n >= 2 the sequence is a subsequence of A007692.

Sequence in context: A061183 A033863 A033908 this_sequence A059598 A133715 A023009

Adjacent sequences: A058917 A058918 A058919 this_sequence A058921 A058922 A058923

nonn

Henry Bottomley (se16(AT)btinternet.com), Jan 11 2001