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 A085607 #9 Dec 15 2017 17:36:26 %S A085607 45,54,250,495,594,1131,1311,2262,2550,2622,2750,2926,3393,3933,4154, %T A085607 4489,4514,4545,4636,4995,5454,5808,5994,6292,6364,6550,7800,8085, %U A085607 8749,9478,9844,12441,13980,14269,14421,15167,15180,15602,16237,18449,18977 %N A085607 Non-palindromic n and its digit reversal have the same sum of prime factors (with repetition). %H A085607 Harvey P. Dale, <a href="/A085607/b085607.txt">Table of n, a(n) for n = 1..500</a> %e A085607 a(3)=250 because 250 = 2*5^3 and 52 = 2^2*13 and 2+5+5+5 = 2+2+13 = 17. %t A085607 spf[n_]:=Total[Flatten[Table[#[[1]],#[[2]]]&/@FactorInteger[n]]]; spffQ[ n_]:=!PalindromeQ[n]&&spf[n]==spf[IntegerReverse[n]]; Select[Range[ 20000], spffQ] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, May 19 2017 *) %Y A085607 Cf. A001414, A085870. %K A085607 base,nonn %O A085607 1,1 %A A085607 _Jason Earls_, Jul 08 2003 %E A085607 Corrected by _T. D. Noe_, Oct 25 2006