The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A032581 Numbers k such that A174141(k) is divisible by k. 1
 1, 2, 3, 4, 5, 6, 7, 8, 9, 15, 105, 150, 213, 318, 321, 426, 534, 639, 642, 747, 750, 855, 963, 1050, 1896, 1941, 2130, 2750, 3180, 3210, 4260, 5340, 6390, 6420, 7470, 7500, 8550, 9630, 12500, 14763, 29921, 54565, 87500, 125000, 604750, 849250 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Equivalently, numbers k whose decimal representation, read as a base-25 value and divided by k, yields an integer. - Jon E. Schoenfield, Oct 25 2019 LINKS Table of n, a(n) for n=1..46. MATHEMATICA With[{b = 25}, Array[If[Mod[#2, #1] == 0, #1, Nothing] & @@ {#, FromDigits[IntegerDigits[#], b]} &, 10^6]] (* Michael De Vlieger, Oct 06 2019 *) CROSSREFS Cf. A032582, A174141. Sequence in context: A287336 A048406 A081433 * A062504 A305458 A102489 Adjacent sequences: A032578 A032579 A032580 * A032582 A032583 A032584 KEYWORD nonn,base AUTHOR Patrick De Geest, Apr 15 1998 EXTENSIONS Name clarified and offset changed by Michael De Vlieger, Oct 06 2019 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 3 18:21 EST 2023. Contains 367540 sequences. (Running on oeis4.)