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A164009
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Zero together with the row 9 of array in A163280.
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4
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0, 19, 38, 51, 76, 75, 114, 105, 136, 162, 190, 209, 264, 273, 308, 345, 384, 425, 468, 513, 560, 609, 660, 713, 768, 825, 884, 945, 1008, 1073, 1140, 1209, 1280, 1353, 1428, 1505, 1584, 1665, 1748, 1833, 1920, 2009, 2100, 2193, 2288, 2385, 2484, 2585, 2688
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| Conjecture: a(n)=A028566(n), n>12. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 31 2010]
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MAPLE
| Contribution from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 31 2010: (Start)
A033676 := proc(n) local dvs; dvs := sort(convert(numtheory[divisors](n), list)) ; op(floor((nops(dvs)+1)/2) , dvs) ; end proc:
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 ; end if; end if; end do: end proc:
printf("0, ") ; for n from 1 to 90 do printf("%d, ", A163280(9, n)) ; end do ; (End)
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CROSSREFS
| Cf. A008578, A161344, A161345, A163280, A164000, A164008, A164010.
Sequence in context: A067205 A196185 A040342 * A048844 A008601 A033900
Adjacent sequences: A164006 A164007 A164008 * A164010 A164011 A164012
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KEYWORD
| nonn
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AUTHOR
| Omar E. Pol (info(AT)polprimos.com), Aug 08 2009
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EXTENSIONS
| Terms beyond a(12) from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 31 2010
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