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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

R. Zumkeller, Table of n, a(n) for n = 1..10000

CROSSREFS

Sequence in context: A212541 A087994 A100755 * A045538 A084066 A231472

Adjacent sequences:  A171899 A171900 A171901 * A171903 A171904 A171905

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, Feb 07 2010

STATUS

approved

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Last modified April 6 14:08 EDT 2020. Contains 333276 sequences. (Running on oeis4.)