A023061 k and 2k are anagrams in base 5 (written in base 5).

13, 130, 143, 1300, 1313, 1430, 1443, 13000, 13013, 13130, 13143, 14300, 14313, 14430, 14443, 102342, 103242, 120234, 120324, 130000, 130013, 130130, 130143, 131300, 131313, 131430, 131443, 143000, 143013, 143130, 143143, 144300, 144313

Offset

1,1

Comments

From Robert Israel, Aug 08 2018: (Start)

The concatenation of two terms is a term.

If a*10^m + b is a term, where b < (2/9)*10^m, then a*10^k+b is a term for all k > m. (End)

Links

Robert Israel, Table of n, a(n) for n = 1..2000

Maple

f:= proc(n) local L, M;
   L:= convert(n, base, 5);
   M:= convert(2*n, base, 5);
   if sort(L) = sort(M) then add(L[i]*10^(i-1), i=1..nops(L)) else NULL fi
end proc:
map(f, [$1..10000]); # Robert Israel, Aug 08 2018

Crossrefs

Sequence in context: A227749 A016162 A155623 * A255495 A121033 A006100

Adjacent sequences: A023058 A023059 A023060 * A023062 A023063 A023064

Keyword

nonn,base

Author

David W. Wilson

Status

approved