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A075475 Numbers n such that Reverse(phi(n+1))=phi(n). 0
1, 3, 15, 129, 270, 833, 5044, 59815, 9633693, 26427528, 4642779313 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

a(12) > 25*10^9. - Donovan Johnson, Jun 09 2011

EXAMPLE

n=59815: phi(n)=40992, phi(n+1)=29904=rev(phi(n))

CROSSREFS

Cf. A069225, A074242.

Sequence in context: A191371 A113077 A135255 * A074241 A117694 A108210

Adjacent sequences:  A075472 A075473 A075474 * A075476 A075477 A075478

KEYWORD

nonn,base

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Sep 20 2002

EXTENSIONS

a(9)-a(11) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Jun 09 2011

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Last modified February 14 08:39 EST 2012. Contains 205614 sequences.