%I #12 Jul 02 2021 01:54:33

%S 17,41,73,89,97,113,137,153,193,233,241,257,281,313,325,337,353,369,

%T 401,409,433,449,457,521,569,577,593,601,617,641,657,673,725,761,769,

%U 801,809,833,845,857,873,881,925,929,937,953,977,1009,1017,1033,1049,1097,1129,1153,1193,1201,1217,1233,1249,1289,1297,1321

%N Odd numbers k such that sigma(k) is congruent to 2 modulo 8.

%H Antti Karttunen, <a href="/A332227/b332227.txt">Table of n, a(n) for n = 1..25000</a>

%H <a href="/index/Si#SIGMAN">Index entries for sequences related to sigma(n)</a>

%t Select[Range[1,1401,2],Mod[DivisorSigma[1,#],8]==2&] (* _Harvey P. Dale_, Apr 12 2021 *)

%o (PARI) isA332227(n) = ((n%2)&&2==(sigma(n)%8));

%Y Cf. A000203.

%Y Subsequence of A191218 and of A332226.

%Y Cf. A332228 (a subsequence, terms that are not prime powers).

%K nonn

%O 1,1

%A _Antti Karttunen_, Feb 13 2020