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 A284802 #6 Apr 05 2017 05:37:13 %S A284802 2,8,12,16,20,38,62,86,110,148,168,188,208,228,272,292,312,332,352, %T A284802 396,416,436,456,476,520,540,560,580,600,698,818,938,1058,1178,1322, %U A284802 1442,1562,1682,1802,1946,2066,2186,2306,2426,2570,2690,2810,2930,3050,3248,3348 %N A284802 Fixed points of the transform A284801. %e A284802 86 is a term of the sequence because 86 in base 5 is 321, its complement in base 5 is 123 and the digit reverse is again 321 that is 86 in base 10. %p A284802 P:=proc(q,h) local a,b,k,n; for n from 1 to q do a:=convert(n,base,h); b:=0; %p A284802 for k from 1 to nops(a) do a[k]:=h-1-a[k]; b:=h*b+a[k]; od; if b=n then print(n); fi; od; end: P(10^2,5); %Y A284802 Cf. A035928, A284801. %K A284802 nonn,base,easy %O A284802 1,1 %A A284802 _Paolo P. Lava_, Apr 03 2017