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A036345
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Divisible by its 'even' sum of prime factors (counted with multiplicity).
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2
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4, 16, 30, 60, 70, 72, 84, 220, 240, 256, 286, 288, 308, 378, 440, 450, 476, 528, 540, 560, 576, 594, 624, 646, 648, 728, 800, 884, 900, 960, 1040, 1056, 1080, 1160, 1170, 1248, 1276, 1404, 1456, 1496, 1530, 1748, 1776, 1798, 1824, 1976, 2322, 2408, 2464
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,1
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LINKS
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Harvey P. Dale, Table of n, a(n) for n = 0..1000
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EXAMPLE
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646 = 2*17*19 -> sum = 2+17+19 = 38 (=even) so 38 divides 646 exactly.
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MATHEMATICA
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dspfQ[n_]:=Module[{spf=Total[Times@@@FactorInteger[n]]}, EvenQ[spf] && Divisible[n, spf]]; Select[Range[4, 2500, 2], dspfQ] (* From Harvey P. Dale, Oct 06 2011 *)
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CROSSREFS
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Cf. A046346, A036346.
Sequence in context: A160410 A173019 A031003 * A046001 A031050 A119677
Adjacent sequences: A036342 A036343 A036344 * A036346 A036347 A036348
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KEYWORD
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nonn,base
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AUTHOR
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Patrick De Geest, Dec 15 1998.
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STATUS
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approved
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