This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A373514 #10 Jul 20 2024 18:06:18
%S A373514 0,1,1,0,2,1,1,1,4,3,1,6,3,8,2,3,9,6,2,8,14,10,14,4,14,20,10,2,14,24,
%T A373514 15,18,6,27,30,19,34,21,26,22,33,10,13,30,5,44,38,30,41,26,36,25,56,
%U A373514 17,58,52,38,51,40,63,45,41,46,76,47,70,72,55,15,80,6
%N A373514 Number of simple difference sets of the Singer type (m^2 + m + 1, m + 1, 1) that are a superset of {0, 1, 3} with m = m(n) = A000961(n), for n >= 1.
%H A373514 Martin Becker, <a href="/A373514/b373514.txt">Table of n, a(n) for n = 1..400</a>
%e A373514 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.
%e A373514 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.
%Y A373514 Cf. A335866, A000961, A373946. Counts sets in A333852 with the property that 3 is also in the set.
%K A373514 nonn
%O A373514 1,5
%A A373514 _Martin Becker_, Jun 07 2024