A023378 a(n+1) = a(n) converted to base 10 from base 4 (written in base 10); a(1)=4.

4, 10, 22, 112, 1300, 110110, 122320132, 13102213110010, 2332222120300201203322, 133212320111123130111021311111121322, 12122133133313032110200332320320202022333020121323230212222

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..16

Mathematica

NestList[FromDigits[IntegerDigits[#, 4]]&, 4, 10] (* Vincenzo Librandi, Apr 19 2014 *)

Crossrefs

Cf. A007090, A373033 (starting 5).

Sequence in context: A025576 A189596 A241430 * A276308 A334260 A038423

Adjacent sequences: A023375 A023376 A023377 * A023379 A023380 A023381

Keyword

nonn,base

Author

David W. Wilson

Status

approved