Number of correlation classes for pairs of different words in an alphabet of size 4
1, 6, 20, 55, 141, 324, 657, 1329, 2515, 4592, 7897, 1322
1 seqfan posts
Wed Jan 14 23:42:22 CET 2009 [seqfan] Conjecture on required alphabet size to exhibit all correlation classes of pairs of words