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A119290
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a(n) is the total number of digits in the first 10^n primes.
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21
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1, 16, 271, 3803, 48982, 610484, 7245905, 83484450, 942636916, 10487584405, 115369529592, 1257761617574, 13611696080735, 146406754329933, 1566562183907264, 16687323842873339, 177063766685219106, 1872323812397478246, 19738266145121133639, 207517446542560214799, 2176390177056541482871, 22774922890367225576581
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OFFSET
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0,2
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LINKS
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FORMULA
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Count the digits in the first 10^n primes.
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EXAMPLE
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At a(1) there are 10^1 primes, 2 3 5 7 11 13 17 19 23 29, and the total number of digits is 16.
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MATHEMATICA
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Accumulate@Table[c = 0; i0 = If[n == 0, 1, 10^(n - 1) + 1]; For[i = i0, i <= 10^n, i++, c += IntegerLength[Prime[i]]]; c, {n, 0, 6}] (* Robert Price, Jun 09 2019 *)
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CROSSREFS
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KEYWORD
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easy,nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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