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

%I #8 Apr 20 2021 22:57:26

%S 26640,1038960,1651680,5393010,7246080,64415520,282597120,

%T 476734095360,844592855040,18592629719040,32939121346560,

%U 124972029225861120,486048526115143680,2047588591705018859520,79855955076495735521280

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

%C 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, ...

%C Warning: sequence data may be incomplete beyond 267321600. - _Sean A. Irvine_, Apr 20 2021

%Y Cf. A046709, A047994.

%K nonn

%O 1,1

%A _Yasutoshi Kohmoto_

%E Missing term inserted, terms sorted, and general revision by _Sean A. Irvine_, Apr 20 2021