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%I #7 Aug 13 2020 14:02:28
%S 110,120,121,130,131,132,140,141,142,143,150,151,152,153,154,160,161,
%T 162,163,164,165,170,171,172,173,174,175,176,180,181,182,183,184,185,
%U 186,187,190,191,192,193,194,195,196,197,198,220,230,231,240,241,242,250,251,252,253,260,261,262,263,264,270,271,272,273,274,275,280,281
%N Numbers n such that there is no i >= 0 for which A053392(i) = n.
%C The Friedman web site quotes B. J. van der Zwaag as saying that the three-digit terms are those for which the middle digit is >= the sum of the other two digits.
%H Erich Friedman, <a href="https://erich-friedman.github.io/mathmagic/0200.html">Problem of the Month (February 2000).
%Y Cf. A053392.
%K nonn,base
%O 1,1
%A _N. J. A. Sloane_, Aug 24 2011
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