A062931 Numbers k that, when expressed in base 5 and then interpreted in base 9, give a multiple of k.

0, 1, 2, 3, 4, 28, 30, 58, 60, 88, 90, 118, 120, 168, 179, 180, 348, 359, 360, 840, 895, 900, 1740, 1795, 1800, 5370, 5400, 11726, 11984, 16200, 21142, 26850, 27000, 38340, 57574, 137128, 183960, 214207, 293628, 421560, 750288, 866700, 1043027, 1304280, 1468140

Offset

1,3

Links

Table of n, a(n) for n=1..45.

Example

28 in base 5 is 103, which interpreted in base 9 is 84 = 3*28.

Mathematica

Join[{0}, Select[Range[11*10^5], Divisible[FromDigits[ IntegerDigits[ #, 5], 9], #]&]] (* Harvey P. Dale, Apr 27 2015 *)

Crossrefs

Cf. A062845, A062846, A062847, A062848, A062849, A062850, A062853, A062864, A062865, A062884, A062889, A062891, A062920, A062921, A062922, A062923, A062925, A062928, A062929, A062930, A062934, A062937, A062939, A062942, A062943, A062944.

Sequence in context: A098549 A274677 A100604 * A059614 A333074 A241974

Adjacent sequences: A062928 A062929 A062930 * A062932 A062933 A062934

Keyword

base,nonn

Author

Erich Friedman, Jul 21 2001

Extensions

More terms from Naohiro Nomoto, Aug 06 2001

Offset changed to 1 by Georg Fischer, Mar 13 2023

Status

approved