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A068876 Smallest n-digit prime with property that digits alternate in parity. +0
7
2, 23, 101, 2129, 10103, 210101, 1010129, 21010127, 101010709, 2101010503, 10101010307, 210101010703, 1010101012301 (list; graph; listen)
OFFSET

1,1

EXAMPLE

a(4) = 2129 as 2, 1, 2 and 9 have even and odd parity alternately.

CROSSREFS

Cf. A030144.

Adjacent sequences: A068873 A068874 A068875 this_sequence A068877 A068878 A068879

Sequence in context: A053999 A131176 A141405 this_sequence A073175 A141888 A034523

KEYWORD

nonn,base

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 19 2002

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.


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