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%I #16 Jun 20 2019 00:47:15
%S 0,2,16,119,924,7445,63129,547572,4838319,4814936,43167234,391378851,
%T 3580266494,32997926272,306051434210,2853931339135,26737370196938,
%U 251515351394258,2374493400086829,22488661383368556,213597279448646179,2033961812788210675,19413250431142245897
%N Number of n-digit primes beginning with n.
%C This is a subsidiary sequence suggested in A088104.
%H Tomás Oliveira e Silva, <a href="http://sweet.ua.pt/tos/primes.html">Tables of values of pi(x) and of pi2(x)</a>
%e a(2) = 2 since 23 and 29 are the only two 2-digit primes beginning with 2.
%Y Cf. A077504, A077505, A088104, A088105, A088754.
%K nonn,base
%O 1,2
%A _Ray Chandler_, Oct 15 2003
%E More terms from _Harvey P. Dale_, Oct 16 2003
%E a(10)-a(13) corrected and a(14)-a(22) from _Donovan Johnson_, Apr 24 2013
%E Incorrect Mathematica program deleted by _Harvey P. Dale_, Apr 25 2013
%E a(23) from _Chai Wah Wu_, Jun 20 2019
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