%I #4 Mar 11 2013 23:20:37
%S 18048976,46722700,4424606020,73636082872,88585861815,90568599176,
%T 518833084192
%N Smallest member of sociable quadruples with signature: abundant, deficient, abundant, deficient.
%C See comments in A222975.
%H J. M. Pedersen, <a href="http://amicable.homepage.dk/knwnc4.htm">Known Sociable Numbers of order four</a>
%e The first quadruple of this type is: 18048976, 20100368, 18914992, 19252208, that are respectively abundant, deficient, abundant, deficient.
%Y Cf. A090615, A222975, A222976, A222978.
%K nonn
%O 1,1
%A _Michel Marcus_, Mar 11 2013
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