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Search: id:A061535
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| A061535 |
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a(n) = a(n-1) + the number of primes <= a(n-1). |
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+0
1
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| 2, 3, 5, 8, 12, 17, 24, 33, 44, 58, 74, 95, 119, 149, 184, 226, 274, 332, 399, 477, 568, 671, 792, 930, 1088, 1269, 1474, 1707, 1973, 2271, 2608, 2986, 3415, 3895, 4434, 5036, 5710, 6461, 7299, 8229, 9260, 10407, 11681, 13083, 14639, 16354, 18250
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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T. D. Noe, Table of n, a(n) for n=1..300
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MATHEMATICA
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a[1] = 2; a[n_] := a[n] = a[n - 1] + PrimePi[ a[n - 1] ]; Table[ a[n], {n, 1, 75} ]
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PROGRAM
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(PARI) { default(primelimit, 4294965247); for (n=1, 238, if (n==1, a=2, a+=primepi(a)); write("b061535.txt", n, " ", a) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 24 2009]
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CROSSREFS
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Sequence in context: A104664 A022856 A089071 this_sequence A129504 A024789 A111388
Adjacent sequences: A061532 A061533 A061534 this_sequence A061536 A061537 A061538
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KEYWORD
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nonn
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AUTHOR
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R. K. Guy, Robert G. Wilson v (rgwv(AT)rgwv.com), May 14 2001
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