A118837 Start with 1 and repeatedly place the first digit at the end of the number and add 4.

1, 5, 9, 13, 35, 57, 79, 101, 15, 55, 59, 99, 103, 35, 57, 79, 101, 15, 55, 59, 99, 103, 35, 57, 79, 101, 15, 55, 59, 99, 103, 35, 57, 79, 101, 15, 55, 59, 99, 103, 35, 57, 79, 101, 15, 55, 59, 99, 103, 35, 57, 79, 101, 15, 55, 59, 99, 103, 35, 57, 79, 101, 15, 55, 59, 99, 103

Offset

1,2

Comments

After 4 steps the sequence enters a cycle of length 9.

Links

Table of n, a(n) for n=1..67.

Mathematica

NestList[FromDigits[RotateLeft[IntegerDigits[#]]]+4&, 1, 70] (* or *) PadRight[ {1, 5, 9, 13}, 70, {55, 59, 99, 103, 35, 57, 79, 101, 15}] (* Harvey P. Dale, Mar 04 2015 *)

Crossrefs

Sequence in context: A024728 A024950 A180514 * A117828 A117830 A376490

Adjacent sequences: A118834 A118835 A118836 * A118838 A118839 A118840

Keyword

base,nonn

Author

Luc Stevens (lms022(AT)yahoo.com), May 24 2006

Status

approved