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A068890 a(1) = 1; a(n) = smallest nontrivial n-th power with property that digits alternate in parity. 1
1, 4, 8, 16, 32, 729, 2187, 256 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture: the sequence is finite.

LINKS

Table of n, a(n) for n=1..8.

CROSSREFS

Cf. A030152, A068891.

Sequence in context: A049932 A272712 A020161 * A073856 A019458 A264166

Adjacent sequences:  A068887 A068888 A068889 * A068891 A068892 A068893

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Mar 20 2002

STATUS

approved

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Last modified January 26 08:18 EST 2020. Contains 331278 sequences. (Running on oeis4.)