|
%I #10 Nov 11 2019 03:54:04
%S 0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,4,0,0,0,0,0,15,0,0,0,0,0,23,0,1,0,
%T 0,0
%N a(n) = number of covering sets of modulus 2*n for Sierpiński/Riesel numbers.
%C a(36) >= 93.
%C Note that it is not true that a(n) = 0 unless n is a multiple of 6. For example, a(40) = 1.
%H Yves Gallot, <a href="http://yves.gallot.pagesperso-orange.fr/papers/smallbrier.pdf">A search for some small Brier numbers</a>, 2000.
%Y Cf. A257647, A258154.
%K nonn,more
%O 1,18
%A _Arkadiusz Wesolowski_, Jun 24 2017
|
