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A171902 First differences of consecutive numbers having at least two identical neighboring digits in decimal representation. 3
11, 11, 11, 11, 11, 11, 11, 11, 1, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 11, 11, 11, 11, 11, 11, 11, 1, 11, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 11, 11, 11, 11, 11, 11, 1, 11, 11, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 11, 11, 11, 11, 11, 1, 11, 11, 11, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 6, 11, 11, 11, 11, 1, 11 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
a(n) = A171901(n+1) - A171901(n);
1 <= a(n) <= 11;
a(A171903(n)) = 1.
LINKS
CROSSREFS
Sequence in context: A212541 A087994 A100755 * A337241 A045538 A084066
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Feb 07 2010
STATUS
approved

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Last modified March 28 14:33 EDT 2024. Contains 371254 sequences. (Running on oeis4.)