%I #12 Apr 05 2024 08:17:07
%S 330003580,3705771825,5373457070
%N Smallest member of sociable quadruples with signature: abundant, abundant, abundant, deficient.
%C See comments in A222975.
%C a(4) > 10^14, if it exists. - _Amiram Eldar_, Apr 05 2024
%H Jan Munch Pedersen, <a href="http://62.198.248.44/aliquot/knwnc4.htm">Known Sociable Numbers of order four</a>, Tables of Aliquot Cycles.
%e The first quadruple of this type is: 330003580, 363003980, 399304420, 440004764 that are respectively abundant, abundant, abundant, deficient.
%Y Cf. A090615, A222975, A222976, A222977.
%K nonn,bref,more
%O 1,1
%A _Michel Marcus_, Mar 11 2013