The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #11 Dec 17 2013 03:03:47
%S 13927680,16248960,19498752,21228480,24373440,24998400,27855360,
%T 28304640,28304640,29030400,29030400,29877120,29998080,29998080,
%U 32497920,33022080,33868800,33868800,37497600,37739520,37739520,38997504,40884480,40884480
%N Amicable quadruples: the values of sigma corresponding to A036471-A036474.
%C Note that repetitions occur.
%H Donovan Johnson, <a href="/A116148/b116148.txt">Table of n, a(n) for n = 1..2000</a>
%Y Cf. A036471, A036472, A036473, A036474.
%K nonn
%O 1,1
%A _Giovanni Resta_, Nov 14 2006