A089604 "3-lazy binary" representation of n: to increment, add one to the last digit, then "carry" the rightmost 3 (replace 03->11, 13->21, or 23->31).

0, 1, 2, 11, 12, 21, 22, 31, 112, 121, 122, 131, 212, 213, 222, 231, 312, 321, 1122, 1131, 1212, 1221, 1222, 1231, 1312, 1321, 2122, 2131, 2212, 2221, 2222, 2231, 2312, 2321, 3122, 3131, 3212, 3221, 11222

Offset

0,3

Comments

Obvious generalization of A089591 and A089600.

Links

Table of n, a(n) for n=0..38.

Crossrefs

Sequence in context: A038116 A101248 A038115 * A038114 A007931 A136407

Adjacent sequences: A089601 A089602 A089603 * A089605 A089606 A089607

Keyword

nonn,easy,base

Author

Jeff Erickson, Dec 31 2003

Extensions

Edited by Charles R Greathouse IV, Aug 03 2010

Status

approved