A228326 - OEIS

A228326

Start with 0. Successive digits in the sequence must differ by 1. Adjoin the smallest number not yet in the sequence.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 87, 65, 43, 21, 23, 45, 67, 89, 876, 54, 32, 10, 12, 34, 56, 76, 78, 98, 765, 432, 101, 210, 121, 212, 123, 232, 321, 234, 323, 434, 343, 454, 345, 456, 543, 2101, 2121, 2123, 2321, 2323, 2343, 2345, 654, 545, 656, 565, 676, 567

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

COMMENTS

Is the sequence infinite?

Yes, as for any digit d, there are infinitely many terms in A033075 with leading digit d+1 or d-1. - Paul Tek Aug 25 2013

REFERENCES

Eric Angelini, Posting to the Sequence Fans Mailing List, Aug 23 2013.

LINKS

Paul Tek, Table of n, a(n) for n = 1..10000

Paul Tek, PERL program for this sequence

CROSSREFS