A162532 Numbers k whose largest divisor <= sqrt(k) equals 12.

144, 156, 168, 180, 192, 204, 216, 228, 264, 276, 348, 372, 444, 492, 516, 564, 636, 708, 732, 804, 852, 876, 948, 996, 1068, 1164, 1212, 1236, 1284, 1308, 1356, 1524, 1572, 1644, 1668, 1788, 1812, 1884, 1956, 2004, 2076, 2148, 2172, 2292, 2316, 2364

Offset

1,1

Comments

See A161344 for more information.

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Formula

Numbers k such that A033676(k)=12.

Maple

A033676 := proc(n) local dvs; dvs := sort(convert(numtheory[divisors](n), list)) ; op(floor((nops(dvs)+1)/2) , dvs) ; end: for n from 1 to 3500 do if A033676(n) = 12 then printf("%d, ", n) ; fi; od: # R. J. Mathar, Jul 13 2009

Mathematica

ld12Q[n_]:=First[Select[Reverse[Divisors[n]], #<=Sqrt[n]&]]==12; Select[ 12*Range[ 200], ld12Q] (* Harvey P. Dale, Mar 29 2013 *)

Crossrefs

Cf. A033676, A008578, A161344, A161345, A161424, A161835, A162526, A162527, A162528, A162529, A162530, A162531.

Sequence in context: A195670 A173065 A044868 * A294575 A205190 A085426

Adjacent sequences: A162529 A162530 A162531 * A162533 A162534 A162535

Keyword

easy,nonn

Author

Omar E. Pol, Jul 05 2009

Extensions

More terms from R. J. Mathar, Jul 13 2009

Status

approved