OFFSET
1,3
COMMENTS
a(n) is the number of distinct entries of row n in the triangle of refined rencontres numbers A181897. - Tilman Piesk, Apr 01 2012
LINKS
MATHEMATICA
Map[Length, Map[Union, Table[f[list_]:=Total[list]!/Apply[Times, list]/Apply[Times, Table[Count[list, n]!, {n, 1, m}]]; Map[f, Partitions[m]], {m, 1, 30}]]] (* Geoffrey Critzer, Mar 25 2013 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladeta Jovovic, Sep 03 2002
EXTENSIONS
a(41)-a(49) from Alois P. Heinz, Feb 04 2014
STATUS
approved