A067108 a(n) = a number with 2n digits with first n digits odd and the rest even, in cyclic increasing order.

12, 1324, 135246, 13572468, 1357924680, 135791246802, 13579132468024, 1357913524680246, 135791357246802468, 13579135792468024680, 1357913579124680246802, 135791357913246802468024

Offset

1,1

Links

Table of n, a(n) for n=1..12.

Example

The sixth term is the concatenation of 135791 and 246802 so a(6)= 135791246802

Mathematica

FromDigits/@Table[Join[PadRight[{}, n, Range[1, 9, 2]], PadRight[{}, n, {2, 4, 6, 8, 0}]], {n, 12}] (* Harvey P. Dale, Dec 29 2018 *)

Crossrefs

Sequence in context: A246981 A174745 A071309 * A240627 A007943 A015512

Adjacent sequences: A067105 A067106 A067107 * A067109 A067110 A067111

Keyword

easy,nonn,base,less

Author

Amarnath Murthy, Jan 08 2002

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), Apr 03 2002

Edited by Charles R Greathouse IV, Apr 24 2010

Status

approved