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

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

Cf. A228327, A228328, A033075.

Sequence in context: A023106 A135480 A289979 * A098766 A032799 A208130

Adjacent sequences: A228323 A228324 A228325 * A228327 A228328 A228329

Keyword

nonn,base

Author

N. J. A. Sloane, Aug 24 2013

Status

approved