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Search: id:A116022
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A116022 n*phi(n)*phi(phi(n)) is a palindrome. +0
1
1, 2, 3, 4, 309, 618, 9264, 43407 (list; graph; listen)
OFFSET

1,2
EXAMPLE

43407*phi(43407)*phi(phi(43407)) = 6739855589376.

CROSSREFS

Cf. A115891.

Sequence in context: A085933 A114341 A004877 this_sequence A004888 A062928 A004899

Adjacent sequences: A116019 A116020 A116021 this_sequence A116023 A116024 A116025

KEYWORD

nonn,base

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 13 2006

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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