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Search: id:A164005
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| 0, 7, 14, 21, 32, 45, 60, 77, 96, 117, 140, 165, 192, 221, 252, 285, 320, 357, 396, 437, 480, 525, 572, 621, 672, 725, 780, 837, 896, 957, 1020, 1085, 1152, 1221, 1292, 1365, 1440, 1517, 1596, 1677, 1760, 1845, 1932, 2021, 2112, 2205, 2300, 2397, 2496, 2597
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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This sequence should be compared with A100451! (See A163280).
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MAPLE
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A033676 := proc(n) local a, d; a := 0 ; for d in numtheory[divisors](n) do if d^2 <= n then a := max(a, d) ; fi; od: a; end: A163280 := proc(n, k) local r, T ; r := 0 ; for T from k^2 by k do if A033676(T) = k then r := r+1 ; if r = n then RETURN(T) ; fi; fi; od: end: A164005 := proc(n) if n = 0 then 0; else A163280(5, n) ; fi; end: seq(A164005(n), n=0..80) ; [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 09 2009]
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CROSSREFS
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Cf. A008578, A161344, A161345, A163280, A164000, A164004, A164006.
Cf. A028347. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 09 2009]
Sequence in context: A020334 A044832 A033004 this_sequence A100451 A028555 A061823
Adjacent sequences: A164002 A164003 A164004 this_sequence A164006 A164007 A164008
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KEYWORD
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nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Aug 08 2009
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EXTENSIONS
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Extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 09 2009
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