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 A341003 #13 Feb 23 2021 04:54:42 %S A341003 2,11,20,101,110,114,123,132,136,141,145,154,158,163,167,176,185,189, %T A341003 198,200,213,231,312,316,321,334,338,343,356,361,365,378,383,387,411, %U A341003 415,433,451,514,518,536,541,558,563,581,585,613,617,631,635,653,671,716,738,761,783 %N A341003 Numbers whose sum of even digits and sum of odd digits differ by 2. %H A341003 Carole Dubois, <a href="/A341003/b341003.txt">Table of n, a(n) for n = 1..5001</a> %t A341003 Select[Range[1000], Abs[Plus @@ Select[(d = IntegerDigits[#]), OddQ] - Plus @@ Select[d, EvenQ]] == 2 &] (* _Amiram Eldar_, Feb 02 2021 *) %Y A341003 Cf. A036301 (sums are equal), A341002 to A341010 (sums differ by 1 to 9). %K A341003 base,nonn %O A341003 1,1 %A A341003 _Eric Angelini_ and _Carole Dubois_, Feb 02 2021