The pebble sequence: a(n) is the length of the longest non-repeating sequence of pebble-moves among the partitions of n.
1, 2, 3, 5, 6, 7, 8, 9, 11, 13, 13, 13, 14, 19, 21, 21, 18, 19, 22, 29, 31, 31, 25, 25, 26
1 seqfan posts
Sun Nov 27 18:10:20 CET 2011 [seqfan] overlooked sequences