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A093475 Beginning with 1, numbers such that no term can arise as a substring of the right concatenation of any combination of the previous terms. 0
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 111, 200, 221, 223, 224, 225, 226, 227, 228, 229, 300, 400, 500, 600, 700, 800, 900, 1000, 1331, 1332, 1333, 1334, 1335, 1336, 1337, 1338, 1339, 1441, 1442, 1443, 1444, 1445, 1446, 1447, 1448 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..54.

EXAMPLE

11 is not a member as it can be obtained as a substring of the concatenation of previous terms 1 and 10.

CROSSREFS

Sequence in context: A202272 A180480 A080459 * A032571 A070958 A051596

Adjacent sequences:  A093472 A093473 A093474 * A093476 A093477 A093478

KEYWORD

base,less,nonn

AUTHOR

Amarnath Murthy, Apr 07 2004

EXTENSIONS

Corrected and extended by David Wasserman, Oct 02 2006

STATUS

approved

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Last modified August 23 00:50 EDT 2019. Contains 326211 sequences. (Running on oeis4.)