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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.
#8 by N. J. A. Sloane at Tue Apr 20 22:57:26 EDT 2021
STATUS
#7 by Sean A. Irvine at Tue Apr 20 19:02:34 EDT 2021
STATUS
#6 by Sean A. Irvine at Tue Apr 20 18:59:35 EDT 2021
NAME
DATA
OFFSET
COMMENTS
CROSSREFS
EXTENSIONS
STATUS
Discussion
Tue Apr 20
19:02
Sean A. Irvine: I could see no reason for offset of 4 or for the previous ordering of the terms. I attempted to contact Y. Kohmoto about this sequence, but received no response. I was unable to verify that there are not further missing terms.
#5 by N. J. A. Sloane at Tue Apr 19 01:07:31 EDT 2016
AUTHOR
Discussion
Tue Apr 19
01:07
OEIS Server: https://oeis.org/edit/global/2496
#4 by N. J. A. Sloane at Sat Apr 09 03:00:00 EDT 2005
KEYWORD
AUTHOR
#3 by N. J. A. Sloane at Sat Jun 12 03:00:00 EDT 2004
NAME
COMMENTS
KEYWORD
#2 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003
KEYWORD
AUTHOR
#1 by N. J. A. Sloane at Sat Dec 11 03:00:00 EST 1999
NAME
DATA
OFFSET
COMMENTS
CROSSREFS
KEYWORD
AUTHOR
STATUS