OFFSET
0,5
FORMULA
a(p) = 1 and a(p^2) = 2 for p prime (see comment in A323349). - Chai Wah Wu, Jan 20 2019
EXAMPLE
The a(12) = 5 integer partitions are (12), (5,5,1,1), (4,4,2,2), (3,3,3,3), (2,2,2,1,1,1,1,1,1). For example, such a matrix for (2,2,2,1,1,1,1,1,1) is:
[1 1 2]
[2 1 1]
[1 2 1]
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Gus Wiseman, Jan 17 2019
EXTENSIONS
a(16)-a(59) from Chai Wah Wu, Jan 20 2019
STATUS
approved