Landau's function g(n): largest order of permutation of n elements. Equivalently, largest lcm of partitions of n.
1, 1, 2, 3, 4, 6, 6, 12, 15, 20, 30, 30, 60, 60, 84, 105, 140, 210, 210, 420, 420, 420
2 seqfan posts
Wed Jul 25 16:48:09 CEST 2012 [seqfan] Re: collapsing permutations to mere Set Partitions(longish)