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A328256
Amicable pairs of cyclops numbers.
1
1280565, 1340235, 71526069316, 75257076284, 1453520375775, 1561230417825, 1568650892445, 1995690781539, 2714480497936, 2854320218864, 5776910172896, 5864460215584, 5818350517628, 6516910297732, 6111770382135, 6139270339785, 9176850735616, 9194440569344, 114552504952875, 123277906567125
OFFSET
1,1
COMMENTS
Amicable pairs (A259180) where both members are cyclops numbers (A134808).
Is this sequence finite? What is the largest known pair?
Up to 2^64 there are 439 pairs, the largest of them is {9591988390446931328, 9596251990981497472} (Eldar).
LINKS
EXAMPLE
{1280565, 1340235} is the first amicable pair where both members are cyclops numbers, so a(1) = 1280565 and a(2) = 1340235.
CROSSREFS
Subsequence of A259180.
Sequence in context: A147670 A204397 A058894 * A118419 A250619 A091291
KEYWORD
nonn,base
AUTHOR
Omar E. Pol, Oct 09 2019
EXTENSIONS
More terms from Amiram Eldar, Oct 09 2019
STATUS
approved