A181284: Decimal expansion of .
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2727272727...272727272727.272727...2727089696969...
(The first ellipsis omits four instances, out of fifteen, of the digit pairs 27,
the second omits nine, out of fourteen.)
This is an example of a so-called zebra irrational number.
Most irrational numbers in the OEIS are small and in the unit interval (between 0 and 1). This is one is an interesting exception to that trend.
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