This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A114386 #9 Feb 01 2021 13:21:37 %S A114386 0,9,18,27,36,45,54,63,72,73,90,91,108,109,126,127,144,146,153,155, %T A114386 180,182,189,191,216,217,218,219,252,253,254,255,288,292,297,301,306, %U A114386 310,315,319,360,361,364,365,378,379,382,383,432,434,436,438,441,443 %N A114386 Integers i such that 57*i = 73 X i. %C A114386 Here * stands for ordinary multiplication and X means carryless (GF(2)[X]) multiplication (A048720). %H A114386 Robert Israel, <a href="/A114386/b114386.txt">Table of n, a(n) for n = 1..10000</a> %H A114386 <a href="/index/Con#CongruCrossDomain">Index entries for sequences defined by congruent products between domains N and GF(2)[X]</a> %p A114386 g:= proc(n) local L,i; %p A114386 L:= op(convert(n,base,2)); %p A114386 L:= [0$6,L] + [0$3,L,0$3] + [L,0$6] mod 2; %p A114386 add(L[i]*2^(i-1),i=1..nops(L)); %p A114386 end proc: %p A114386 select(t -> 57*t = g(t), [$0..1000]); # _Robert Israel_, Jan 31 2021 %Y A114386 Row 57 of A115872. A114387 shows this sequence in binary. %K A114386 nonn %O A114386 1,2 %A A114386 _Antti Karttunen_, Feb 07 2006 %E A114386 Offset corrected by _Robert Israel_, Jan 31 2021