# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a215612 Showing 1-1 of 1 %I A215612 #12 Oct 15 2018 11:44:10 %S A215612 1,7,73,9271,3195367,6769801,15413863,24540337,47424961,52268743, %T A215612 146583343,384586849,469501471,475882081,859764727,1097475991, %U A215612 1169323417,1400034919,2518532047,2870143993,3258854623,5609707729,6022970047,6420870271,9011348521 %N A215612 Odd integers n such that 2^n == 2^10 (mod n). %C A215612 Also, the odd solutions to 2^(n-10) == 1 (mod n). The only even solution is n=10. %C A215612 For all m, 2^A033982(m)-1 belongs to this sequence. %H A215612 Max Alekseyev, <a href="/A215612/b215612.txt">Table of n, a(n) for n = 1..209</a> (all terms below 10^14) %t A215612 m = 2^10; Join[Select[Range[1, m, 2], Divisible[2^# - m, #] &], Select[Range[m + 1, 10^7, 2], PowerMod[2, #, #] == m &]] (* _Robert Price_, Oct 15 2018 *) %Y A215612 The odd terms of A015932. %Y A215612 Cf. A173572, A033984, A215610, A215611, A215613 %K A215612 nonn %O A215612 1,2 %A A215612 _Max Alekseyev_, Aug 17 2012 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE