OFFSET
1,5
LINKS
Martin Becker, Table of n, a(n) for n = 1..400
EXAMPLE
For n=5, m=5, there are 2 Singer type planar difference sets of order 5 containing 0, 1, and 3: {0,1,3,8,12,18} and {0,1,3,10,14,26}. Thus a(5) = 2.
For n=11, m=16, there is only 1 such set: {0,1,3,7,15,31,63,90,116,127,136,181,194,204,233,238,255}. Thus a(11) = 1.
CROSSREFS
KEYWORD
nonn
AUTHOR
Martin Becker, Jun 07 2024
STATUS
approved