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A090156 Primes of the form identical digits preceded by a 8. 1
83, 89, 811, 877, 8111, 8999, 83333333, 89999999, 8777777777, 8777777777777777, 89999999999999999999, 833333333333333333333333, 811111111111111111111111111, 833333333333333333333333333333 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..34

MATHEMATICA

Select[ FromDigits /@ Flatten[ Table[ PadRight[{8}, i, # ] & /@ {1, 2, 3, 4, 5, 6, 7, 8, 9}, {i, 2, 50}], 1], PrimeQ[ # ] &]

CROSSREFS

Sequence in context: A130286 A062677 A045714 * A158719 A160028 A115258

Adjacent sequences:  A090153 A090154 A090155 * A090157 A090158 A090159

KEYWORD

nonn,base

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 22 2003

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Last modified February 16 09:27 EST 2012. Contains 205904 sequences.