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A211679
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Triangle of earliest friendly numbers having n friends.
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3
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6, 28, 6, 28, 496, 84, 270, 1488, 1638, 84, 270, 1488, 1638, 24384, 210, 17360, 43400, 284480, 2229500, 2886100, 3780, 66960, 167400, 406224, 1097280, 6656832, 13035330, 3780, 66960, 167400, 406224, 1097280, 6656832, 13035330, 29410290
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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2,1
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COMMENTS
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Row n contains the earliest set of friendly numbers of length n. The sequence A211677 contains the last element of each row.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,tabf,hard
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AUTHOR
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STATUS
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approved
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