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A061880 First (leftmost) digit - second digit + third digit - fourth digit .... = 11. 1
209, 308, 319, 407, 418, 429, 506, 517, 528, 539, 605, 616, 627, 638, 649, 704, 715, 726, 737, 748, 759, 803, 814, 825, 836, 847, 858, 869, 902, 913, 924, 935, 946, 957, 968, 979, 2090, 3080, 3091, 3190, 4070, 4081, 4092, 4180, 4191, 4290, 5060, 5071 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Note that all entries are divisible by eleven.
LINKS
MATHEMATICA
Select[Range[11, 6000, 11], Total[Times@@@Partition[Riffle[ IntegerDigits[ #], {1, -1}, {2, -1, 2}], 2]]==11&] (* Harvey P. Dale, Jun 21 2014 *)
CROSSREFS
Sequence in context: A025334 A025326 A060979 * A216995 A283742 A083512
KEYWORD
base,nonn,easy
AUTHOR
Larry Reeves (larryr(AT)acm.org), May 15 2001
STATUS
approved

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Last modified April 20 09:30 EDT 2024. Contains 371799 sequences. (Running on oeis4.)