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A164008 Zero together with row 8 of the array in A163280. 4
0, 17, 34, 39, 68, 65, 102, 98, 128, 153, 170, 198, 228, 260, 294, 330, 368, 408, 450, 494, 540, 588, 638, 690, 744, 800, 858, 918, 980, 1044, 1110, 1178, 1248, 1320, 1394, 1470, 1548, 1628, 1710, 1794, 1880, 1968, 2058, 2150, 2244, 2340, 2438, 2538, 2640 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..48.

Index entries for linear recurrences with constant coefficients, signature (3, -3, 1).

FORMULA

Conjecture: a(n) = A028563(n), n > 9. [R. J. Mathar, Jul 31 2010]

MAPLE

A033676 := proc(n) local dvs; dvs := sort(convert(numtheory[divisors](n), list)) ; op(floor((nops(dvs)+1)/2) , dvs) ; 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: printf("0, ") ; for n from 1 to 70 do printf("%d, ", A163280(8, n)) ; end do ; # R. J. Mathar, Feb 05 2010

CROSSREFS

Cf. A008578, A161344, A161345, A163280, A164000, A164007, A164009.

Sequence in context: A135637 A040272 A062054 * A013577 A234942 A044857

Adjacent sequences:  A164005 A164006 A164007 * A164009 A164010 A164011

KEYWORD

nonn

AUTHOR

Omar E. Pol, Aug 08 2009

EXTENSIONS

Terms beyond 228 from R. J. Mathar, Feb 05 2010

STATUS

approved

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Last modified May 19 14:45 EDT 2019. Contains 323395 sequences. (Running on oeis4.)