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A279689 Numbers n such that n and 2n are anagrams in more than one base. 3
0, 40, 96, 104, 208, 248, 258, 288, 312, 480, 752, 833, 936, 960, 968, 1170, 1248, 1728, 1755, 2090, 2232, 2400, 2608, 2768, 2808, 2832, 2904, 4224, 4464, 5208, 5280, 5418, 6075, 6584, 6696, 6714, 6720, 6768, 6800, 6966, 7020, 7182, 7200, 7714, 7728, 7776 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Chai Wah Wu, Table of n, a(n) for n = 1..1001

EXAMPLE

a(2) = 40 because 40 and 80 are anagrams in bases 5 and 11.

a(13) = 936 because 936 and 1872 are anagrams in bases 3, 9, and 53.

PROG

(PARI) isok(n) = (n==0) || sum(b=2, n, vecsort(digits(n, b)) == vecsort(digits(2*n, b))) > 1; \\ Michel Marcus, Dec 17 2016

CROSSREFS

Cf. A279688.

Sequence in context: A036194 A023695 A038466 * A063310 A211493 A185791

Adjacent sequences:  A279686 A279687 A279688 * A279690 A279691 A279692

KEYWORD

nonn,base

AUTHOR

Peter Kagey, Dec 17 2016

STATUS

approved

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Last modified December 5 05:32 EST 2021. Contains 349530 sequences. (Running on oeis4.)