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

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 A196937 A253292

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