A032577 Numbers k whose decimal representation, read as a base-23 value and divided by k, yields an integer.
1, 2, 3, 4, 5, 6, 7, 8, 9, 13, 26, 39, 169, 221, 442, 663, 884, 2405, 2873, 2912, 5980, 26455, 28730, 29120, 31667, 42441, 48841, 52900, 74435, 84882, 104650, 132808, 139380, 413738, 20392554, 23490402, 25209381, 32287569, 234904020, 239235484
Offset: 1
Examples
2405 is a term: 2405_23 = 26455 = 2405*11. - _Jon E. Schoenfield_, Oct 25 2019
Links
- Frank A. Stevenson, Table of n, a(n) for n = 1..67
Programs
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PARI
is(n) = denominator(fromdigits(digits(n), 23)/n) == 1 \\ David A. Corneth, Jan 02 2024
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Python
list(filter(lambda n: int(str(n),23) % n==0, [i for i in range(1,500000)])) # Frank A. Stevenson, Jan 02 2024
Extensions
More terms from Larry Reeves (larryr(AT)acm.org), Sep 27 2000
Offset changed and Name edited by Jon E. Schoenfield, Oct 25 2019
Comments