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A030012
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Euler transform of {1, primes}.
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1
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1, 3, 6, 14, 27, 58, 109, 216, 402, 760, 1390, 2550, 4569, 8178, 14408, 25280, 43850, 75685, 129436, 220226, 371906, 624840, 1043178, 1733108, 2863422, 4709222, 7706800, 12558213, 20372860, 32917707, 52971756, 84923643, 135640660, 215886778, 342419132
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Alois P. Heinz, Table of n, a(n) for n = 0..1000
N. J. A. Sloane, Transforms
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MAPLE
| with(numtheory): etr:= proc(p) local b; b:=proc(n) option remember; if n=0 then 1 else add (add (d*p(d), d=divisors(j)) *b(n-j), j=1..n)/n fi end end: c:= etr (k-> `if`(k<=1, k, ithprime(k-1))): a:= n-> c(n+1): seq (a(n), n=0..35); # Alois P. Heinz, Sep 07 2008
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CROSSREFS
| Sequence in context: A120940 A049940 A051749 * A001970 A006951 A132891
Adjacent sequences: A030009 A030010 A030011 * A030013 A030014 A030015
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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