A032581 Numbers k such that A174141(k) is divisible by k.

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

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