OFFSET
0,3
LINKS
Tilman Piesk, Permutations and partitions in the OEIS (Wikiversity)
EXAMPLE
The 23rd permutation is (1 4)(2 3) in cycle notation, and the corresponding set partition is {{1,4},{2,3}}, which is the 6th in the infinite order defined by A231428. So a(23) = 6.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Tilman Piesk, Nov 02 2014
STATUS
approved