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 A045574 #16 Jan 06 2023 19:27:20
%S A045574 0,1,6,8,9,11,16,18,19,61,66,68,69,81,86,88,89,91,96,98,99,101,106,
%T A045574 108,109,111,116,118,119,161,166,168,169,181,186,188,189,191,196,198,
%U A045574 199,601,606,608,609,611,616,618,619,661,666,668,669,681,686,688,689,691,696,698,699
%N A045574 Numbers that are still numbers when turned upside down (uses only digits 0, 1, 6, 8, 9 with no final 0's).
%C A045574 "No final 0's" means that the rotated number should not have leading zeros; the single digit of the number 0 itself is not considered as such.
%H A045574 Michel Marcus, <a href="/A045574/b045574.txt">Table of n, a(n) for n = 1..2501</a>
%H A045574 <a href="/index/Fi#final">Index entries for sequences related to final digits of numbers</a>
%o A045574 (PARI) is_A045574(n)=n%10 & !setminus(Set(Vec(Str(n))),Vec("01689")) || !n \\ _M. F. Hasler_, May 04 2012
%Y A045574 Cf. A000787, A018847, A054047, A057770.
%K A045574 base,easy,nonn
%O A045574 1,3
%A A045574 _Erich Friedman_
%E A045574 More terms from _Michel Marcus_, Dec 27 2020