OFFSET
1,3
LINKS
Christopher Hunt Gribble, C++ program
EXAMPLE
For n = 4, the 8 partitions of 16 into square parts are:
Partition Square side
. 1 2 3 4
.
. 1 16 0 0 0
. 2 12 1 0 0
. 3 8 2 0 0
. 4 4 3 0 0
. 5 0 4 0 0
. 6 7 0 1 0
. 7 3 1 1 0
. 8 0 0 0 1
So a(4) = 3 as there are 3 runs of 2 X 2 squares: (0,1,2,3,4) from partitions 1 to 5, (0,1) from partitions 6 to 7 and (0) from partition 8.
CROSSREFS
KEYWORD
nonn
AUTHOR
Christopher Hunt Gribble, Oct 03 2013
STATUS
approved