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A098766
Lexicographically earliest increasing sequence with property that in the concatenation of its terms every pair of consecutive digits differs by 1.
0
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 87, 89, 876, 5432, 10101, 21010, 101010, 101012, 101210, 101212, 101232, 101234, 321010, 1010101, 2101010, 10101010, 10101012, 10101210, 10101212, 10101232, 10101234, 32101010, 101010101, 210101010, 1010101010, 1010101012, 1010101210
OFFSET
0,3
CROSSREFS
Sequence in context: A135480 A289979 A228326 * A032799 A208130 A160343
KEYWORD
base,nonn,easy
AUTHOR
Eric Angelini, Oct 02 2004
EXTENSIONS
Corrected and edited by Max Alekseyev, Sep 13 2009
STATUS
approved