OFFSET
0,5
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..150
Wikipedia, Partition of a set
EXAMPLE
a(5) = 3: 14|23|5, 1|234|5, 1|23|45.
a(6) = 1: 123456.
a(7) = 8: 14|23|5|67, 1|234|5|67, 1|23|45|67, 1|23|467|5, 14|27|36|5, 1|247|36|5, 1|27|346|5, 1|27|36|45.
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Sep 03 2024
STATUS
approved