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A023091

Numbers k such that k and 7*k are anagrams.

0, 1359, 11688, 11883, 12903, 13029, 13359, 13449, 13590, 13599, 13659, 107583, 108726, 111873, 116688, 116880, 116988, 118731, 118830, 118833, 119883, 123876, 124875, 126888, 127389, 129003, 129030, 129033, 129903, 130029, 130149, 130290

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OFFSET

1,2

COMMENTS

All terms are divisible by 3. - Eric M. Schmidt, Jul 12 2014

LINKS

David W. Wilson, Table of n, a(n) for n = 1..10001

MATHEMATICA

si[n_] := Sort@ IntegerDigits@ n; Flatten@{0, Table[Select[Range[10^d + 2, 2 10^d - 1, 3], si[#] == si[7 #] &], {d, 0, 6}]} (* Giovanni Resta, Mar 20 2017 *)

Select[3*Range[0, 50000], Sort[IntegerDigits[7 #]]==Sort[IntegerDigits[#]]&] (* Harvey P. Dale, Jan 06 2022 *)

CROSSREFS

Cf. A023086, A023087, A023088, A023089, A023090, A023092, A023093.

Sequence in context: A316680 A252379 A175696 * A242458 A223254 A260441

Adjacent sequences: A023088 A023089 A023090 * A023092 A023093 A023094

KEYWORD

nonn,base

AUTHOR

David W. Wilson

STATUS

approved

URL: https://oeis.org/A023091

⇱ A023091 - OEIS