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%I M4477 #25 Apr 03 2020 04:06:20
%S 0,1,3,8,10,11,13,18,30,31,33,38,80,81,83,88,100,101,103,108,110,111,
%T 113,118,130,131,133,138,180,181,183,188,300,301,303,308,310,311,313,
%U 318,330,331,333,338,380,381,383,388,800,801,803,808,810,811,813,818
%N Horizontally symmetric numbers.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H Indranil Ghosh, <a href="/A007284/b007284.txt">Table of n, a(n) for n = 0..50000</a>
%F Numbers using only digits 0, 1, 3 and 8.
%o (Python)
%o allowed = ("0", "1", "3", "8")
%o def a(n):
%o return all(x in allowed for x in str(n))
%o print([i for i in range(50000) if a(i)])
%o # _Indranil Ghosh_, Feb 03 2017
%Y Cf. A046031.
%K nonn,easy,base
%O 0,3
%A _N. J. A. Sloane_.
%E More terms from _Henry Bottomley_, Feb 14 2000
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