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A144651 Consider pairs of numbers m,n such that UnitaryPhi(m)=UnitaryPhi(n)= (3*m^(1/2)-2*n^(1/2))^2, m<n. Sequence gives m. 1
8954982400, 146700521676800, 273857689763840, 8383654522880000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

If m=n then only one example m=n=1 exists.

LINKS

Table of n, a(n) for n=1..4.

EXAMPLE

Factorization :

2^12*5^2*7*13*31^2

2^13*5^2*7*13*8191*31^2

2^14*5*7^2*13*43*127*31^2

2^15*5^4*7*13*31*151*31^2

CROSSREFS

Cf. A047994, A144648.

Sequence in context: A270612 A331412 A204407 * A345863 A346257 A345723

Adjacent sequences:  A144648 A144649 A144650 * A144652 A144653 A144654

KEYWORD

nonn,more

AUTHOR

Yasutoshi Kohmoto, Jan 19 2009

STATUS

approved

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Last modified September 26 01:51 EDT 2022. Contains 356986 sequences. (Running on oeis4.)