

A183020


Largest members of ksociable cycles of order r, with k > 1 and r > 1.


3




OFFSET

1,1


COMMENTS

A ksociable (or multisociable) cycle of order r consists of r distinct positive integers such that the sum of the aliquot divisors (or proper divisors) of each is equal to k times the next term in the cycle, where k (the multiplicity) is a fixed positive integer.
In this sequence, a(1), a(2) and a(4) are the largest terms of 2sociable cycles of order 3 (or bicrowds), and a(3) is the larger term of a 3sociable cycle of order 2 (or triamicable pair).
No other terms <= 10^12.


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KEYWORD

nonn,more


AUTHOR



STATUS

approved



