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A161835 Numbers n such that their largest divisor <= sqrt(n) equals 5. 23
25, 30, 35, 40, 45, 50, 55, 65, 75, 85, 95, 115, 125, 145, 155, 185, 205, 215, 235, 265, 295, 305, 335, 355, 365, 395, 415, 445, 485, 505, 515, 535, 545, 565, 635, 655, 685, 695, 745, 755, 785, 815, 835, 865, 895, 905, 955, 965, 985, 995, 1055, 1115, 1135, 1145, 1165, 1195 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See A161344 for more information. - Omar E. Pol, Jul 05 2009

LINKS

Table of n, a(n) for n=1..56.

FORMULA

Numbers n such that A033676(n)=5. - Omar E. Pol, Jul 05 2009

MATHEMATICA

Select[Range[1, 1000], Function[m, Max[Select[Divisors[m], # <= Sqrt[m] &]] == 4]] (* Ashton Baker, Nov 03 2013 *)

PROG

(PARI) is(n)=divisors(n)[(numdiv(n)+1)\2]==5 \\ - M. F. Hasler, Nov 03 2013

CROSSREFS

Cf. A033676, A008578, A161344, A161345, A161424, A161835, A162526, A162527, A162528, A162529, A162530, A162531, A162532.

Sequence in context: A234640 A219258 A044861 * A284045 A213929 A167324

Adjacent sequences:  A161832 A161833 A161834 * A161836 A161837 A161838

KEYWORD

easy,nonn

AUTHOR

Omar E. Pol, Jun 20 2009

EXTENSIONS

Definition and more terms added by R. J. Mathar, Jun 28 2009

STATUS

approved

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Last modified February 26 12:33 EST 2020. Contains 332279 sequences. (Running on oeis4.)