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 A055964 #7 Aug 08 2024 06:56:04
%S A055964 0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,17,34,51,68,85,102,119,
%T A055964 136,153,170,187,204,221,238,255,272,34,51,68,85,102,119,136,153,170,
%U A055964 187,204,221,238,255,272,289,51,68,85,102,119,136,153,170,187,204,221,238
%N A055964 n + reversal of hexadecimal (base 16) digits of n (written in base 10).
%C A055964 If n has an even number of hexadecimal digits then a(n) is a multiple of 17.
%F A055964 a(n) = n + A056962(n).
%t A055964 Table[n + IntegerReverse[n, 16], {n, 0, 100}] (* _Paolo Xausa_, Aug 08 2024 *)
%Y A055964 Cf. A056962, A056964.
%K A055964 base,nonn
%O A055964 0,2
%A A055964 _Henry Bottomley_, Jul 18 2000