A279689 Numbers n such that n and 2n are anagrams in more than one base.

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

Offset: 1

Author

Peter Kagey, Dec 17 2016

Keywords

• nonn
• base

Examples

			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.
		

Links

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

Crossrefs

Cf. A279688.

Programs

PARI

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