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A083122 a(1) = 1, then the smallest number not included earlier and not a string of 1's such that the concatenation a(n), a(n+1) is a palindrome. 0
1, 21, 2, 12, 121, 1121, 211, 112, 1211, 11121, 2111, 1112, 12111, 111121, 21111, 11112, 121111 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..17.

CROSSREFS

Sequence in context: A040439 A174429 A108718 * A040440 A040431 A040430

Adjacent sequences:  A083119 A083120 A083121 * A083123 A083124 A083125

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 23 2003

EXTENSIONS

Corrected and extended by Ray G. Opao, Sep 22 2005

STATUS

approved

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Last modified October 21 16:50 EDT 2019. Contains 328302 sequences. (Running on oeis4.)