OFFSET
1,3
EXAMPLE
There are three distinct ways to partition the numbers 1 to 23 into three sets such that no member of each partition is the sum of two other members. The solutions are (11212221331333313323212), (11212221331333331323212), (11212221331333333323212) where each digit is the partition to which k belongs.
CROSSREFS
KEYWORD
nonn,more,hard
AUTHOR
Jud McCranie, Dec 23 2017
STATUS
approved