A085772 - OEIS

A085772

(n / sum of digits of n) is a semiprime.

10, 12, 20, 24, 30, 36, 40, 48, 50, 54, 60, 70, 80, 81, 90, 102, 110, 126, 132, 135, 150, 204, 220, 225, 230, 234, 264, 306, 315, 322, 330, 342, 351, 375, 378, 396, 408, 410, 414, 440, 441, 460, 468, 506, 510, 513, 522, 550, 552, 594, 605, 621, 644, 660, 684

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

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

MATHEMATICA

Select[Range[700], PrimeOmega[#/Total[IntegerDigits[#]]]==2&] (* Harvey P. Dale, Jul 12 2016 *)

CROSSREFS

Cf. A001358.

Sequence in context: A338855 A221638 A358998 * A162189 A186438 A346678

Adjacent sequences: A085769 A085770 A085771 * A085773 A085774 A085775

KEYWORD

base,nonn

AUTHOR

Jason Earls, Jul 23 2003

STATUS

approved