A050739 Numbers of form 9^k (values of k see A050730) containing no pair of consecutive equal digits (probably finite).

1, 9, 81, 729, 6561, 59049, 4782969, 43046721, 387420489, 31381059609, 282429536481, 2541865828329, 109418989131512359209, 30903154382632612361920641803529

Offset

0,2

Links

Table of n, a(n) for n=0..13.

Crossrefs

Cf. A043096, A050730.

Sequence in context: A100062 A001019 A074118 * A240945 A158779 A047901

Adjacent sequences: A050736 A050737 A050738 * A050740 A050741 A050742

Keyword

nonn,base

Author

Patrick De Geest, Sep 15 1999

Status

approved