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Search: id:A099664
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A099664 a[n] is the largest prime before A002278[n] repdigits. +0
1
3, 43, 443, 4441, 44417, 444443, 4444409, 44444399, 444444443, 4444444429, 44444444441, 444444444443, 4444444444439, 44444444444353, 444444444444421, 4444444444444423, 44444444444444411, 444444444444444419 (list; graph; listen)
OFFSET

1,1

EXAMPLE

n=2: 43 is before 44.

MATHEMATICA

<<NumberTheory`NumberTheoryFunctions` Table[Table[PreviousPrime[4*(10^n-1)/9], {n, 1, 35}]

CROSSREFS

Cf. A003618, A003617, A096497, A096498, A068104, A002275-A002283, A099656-A099668.

Sequence in context: A060559 A020461 A036940 this_sequence A093163 A141060 A136648

Adjacent sequences: A099661 A099662 A099663 this_sequence A099665 A099666 A099667

KEYWORD

base,nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Nov 17 2004

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.


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