OFFSET
0,9
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..45
Wikipedia, Partition of a set
EXAMPLE
a(4) = 1: 1|234.
a(7) = 1: 1|27|36|45.
a(8) = 4: 18|27|36|45, 1|278|36|45, 1|27|368|45, 1|27|36|458.
a(9) = 5: 18|27|36|45|9, 1|278|36|45|9, 1|27|368|45|9, 1|27|36|458|9, 1|27|36|45|89.
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Sep 03 2024
STATUS
approved