A023363 a(n+1) = a(n) converted to base 6 from base 2 (written in base 10).

2, 6, 42, 7998, 2611812210, 1333641931958227433092278, 178851409718295616588471418100320880488356072795626108481060122

Offset

1,1

Links

John Cerkan, Table of n, a(n) for n = 1..9

Example

6 in binary is 110. Reinterpreting 110 in base 6 gives 1 * 6^2 + 1 * 6^1 + 0 * 6^0 = 36 + 6 = 42.

Mathematica

NestList[FromDigits[IntegerDigits[#, 2], 6] &, 2, 8] (* Alonso del Arte, Jan 22 2019 *)

Prog

(PARI) a(n) = if (n==1, 2, fromdigits(binary(a(n-1)), 6)); \\ Michel Marcus, Jan 22 2019

Crossrefs

Cf. A023362 (bases 2 & 5).

Sequence in context: A100016 A344562 A000610 * A091241 A198076 A330675

Adjacent sequences: A023360 A023361 A023362 * A023364 A023365 A023366

Keyword

nonn,base

Author

David W. Wilson

Status

approved