%I #5 Oct 13 2022 14:22:10
%S 36,18,18,18,54,72,18,36,36,18,18,18,54,18,18,90,54,18,54,18,18,18,
%T 126,54,90,36,18,18,18,36,90,18,18,54,18,108,18,36,126,18,36,36,54,36,
%U 72,18,54,18,36,126,18,72,18,18,54,18,36,36,54,36,144,54,18,18,90,36,18,36,162,18
%N First differences of A061241.
%C Six prime modulo classes are A061237, A061238, A061239, A061240, A061241 and A061242
%C with remainders 1, 2, 4, 5, 7, and 8 (mod 9).
%t Differences[Select[Prime[Range[500]],Mod[#,9]==7&]] (* _Harvey P. Dale_, Oct 13 2022 *)
%Y Cf. A158910.
%K nonn,less
%O 1,1
%A _Paul Curtz_, Apr 01 2009
%E Edited and extended by _R. J. Mathar_, Apr 04 2009