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A050740
Numbers of form 11^k (values of k see A050731) containing no pair of consecutive equal digits (probably finite).
0
1, 121, 14641, 161051, 19487171, 2357947691, 25937424601, 3138428376721, 45949729863572161
OFFSET
0,2
MATHEMATICA
Select[11^Range[0, 20], Min[Abs[Differences[IntegerDigits[#]]]]>0&] (* Harvey P. Dale, Jan 03 2024 *)
CROSSREFS
Sequence in context: A066625 A078277 A178512 * A121013 A287728 A218287
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Sep 15 1999
STATUS
approved