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%I A115772 #10 Mar 31 2012 13:21:10
%S A115772 0,5,10,15,20,21,30,31,40,42,45,47,60,61,62,63,80,84,85,90,94,95,120,
%T A115772 122,124,125,126,127,160,165,168,170,173,175,180,181,188,189,190,191,
%U A115772 240,244,245,248,250,252,253,254,255,320,330,336,340,341,346,350,351
%N A115772 Integers i such that 13*i = A048720bi(21,i).
%C A115772 Here * stands for ordinary multiplication and A048720 is the carryless (GF(2)[X]) multiplication.
%C A115772 a(n) appears to be the set of all n that can be expressed as x OR 4x for the bitwise OR operation. [From _Gary Detlefs_ Dec 20 2010]
%H A115772 <a href="/index/Con#CongruCrossDomain">Index entries for sequences defined by congruent products between domains N and GF(2)[X]</a>
%Y A115772 Row 13 of A115872. Cf. A048717, A115767, A115770. Superset of A115774 ? A115776 gives the terms which are not in A115774. A115773 shows this sequence in binary.
%Y A115772 Cf. A178891
%K A115772 nonn
%O A115772 0,2
%A A115772 _Antti Karttunen_, Jan 30 2006

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