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 A119491 Sum of the first n n-digit primes. 2
 2, 24, 311, 4062, 50153, 600240, 7000409, 80000960, 900000729, 10000000754, 110000001257, 1200000001154, 13000000002051, 140000000003318, 1500000000003685, 16000000000004454, 170000000000009723 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Robert G. Wilson v, Table of n, a(n) for n = 1..100 EXAMPLE The first three three-digit primes are: 101, 103 and 107. Their sum is 311. Hence a(3) is 311. MAPLE with(numtheory): a:=n->add(ithprime(pi(nextprime(10^(n-1)))+i), i=0..n-1): seq(a(n), n=1..9); # Emeric Deutsch, Jul 29 2006 MATHEMATICA NextPrim[n_] := Block[{k = n + 1}, While[ !PrimeQ@k, k++ ]; k]; f[n_] := Plus @@ Rest@NestList[NextPrim, 10^(n - 1), n]; Array[f, 18] (* Robert G. Wilson v *) CROSSREFS Cf. A114053. Sequence in context: A065513 A246190 A246610 * A001864 A099045 A181174 Adjacent sequences:  A119488 A119489 A119490 * A119492 A119493 A119494 KEYWORD base,nonn AUTHOR Tanya Khovanova, Jul 26 2006 EXTENSIONS a(5)-a(8) from Emeric Deutsch, Jul 29 2006 a(9)-a(18) from Robert G. Wilson v, Aug 01 2006 STATUS approved

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Last modified October 19 04:40 EDT 2019. Contains 328211 sequences. (Running on oeis4.)