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A046710

Irrational unitary-phi amicable numbers: numbers a such that uphi(a) = uphi(b) = 2*(a^2-b^2)^(1/2) where uphi = A047994.

26640, 1038960, 1651680, 5393010, 7246080, 64415520, 282597120, 476734095360, 844592855040, 18592629719040, 32939121346560, 124972029225861120, 486048526115143680, 2047588591705018859520, 79855955076495735521280

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OFFSET

1,1

COMMENTS

Factorizations: 2^4*3^2*5*37, 2^4*3^3*13*5*37, 2^5*3^2*31*5*37, 2*3*5*7*61*421, 2^5*3^3*13*31*5*37, ...

Warning: sequence data may be incomplete beyond 267321600. - Sean A. Irvine, Apr 20 2021

LINKS

Table of n, a(n) for n=1..15.

CROSSREFS

Cf. A046709, A047994.

Sequence in context: A236622 A329785 A229592 * A251303 A385341 A196937

Adjacent sequences: A046707 A046708 A046709 * A046711 A046712 A046713

KEYWORD

nonn

AUTHOR

Yasutoshi Kohmoto

EXTENSIONS

Missing term inserted, terms sorted, and general revision by Sean A. Irvine, Apr 20 2021

STATUS

approved

URL: https://oeis.org/A046710

⇱ A046710 - OEIS