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%I #12 Oct 07 2020 09:42:55
%S 1,11,21,44,55,81,90,118,126,134,147,152,171,178,184,199,262,273,279,
%T 300,326,345,346,361,365,389,394,415,418,433,436,440,448,453,455,498,
%U 525,534,541,547,563,578,586,591,609,610,623,632,643,644,651,655,658
%N Values of n such that the first decimal digits of {2^n, ..., 9^n} form a prime number when concatenated.
%H Rick L. Shepherd, <a href="/A097616/b097616.txt">Table of n, a(n) for n = 1..10000</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/GelfandsQuestion.html">Gelfand's Question</a>
%H J. Eising, D. Radcliffe, and J. Top. <a href="http://www.jstor.org/discover/10.4169/amer.math.monthly.122.03.234">A Simple Answer to Gelfand’s Question</a>. American Mathematical Monthly 122:3 (2015), 234-245.
%Y Cf. A097617.
%K nonn,base
%O 1,2
%A _Eric W. Weisstein_, Aug 16 2004
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