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A211679 Triangle of earliest friendly numbers having n friends. 3


%S 6,28,6,28,496,84,270,1488,1638,84,270,1488,1638,24384,210,17360,

%T 43400,284480,2229500,2886100,3780,66960,167400,406224,1097280,

%U 6656832,13035330,3780,66960,167400,406224,1097280,6656832,13035330,29410290

%N Triangle of earliest friendly numbers having n friends.

%C Row n contains the earliest set of friendly numbers of length n. The sequence A211677 contains the last element of each row.

%H Donovan Johnson, <a href="/A211679/b211679.txt">Table of n, a(n) for n = 2..45</a>

%Y Cf. A074902 (friendly numbers), A211677.

%K nonn,tabf,hard

%O 2,1

%A _T. D. Noe_, May 10 2012

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Last modified January 26 19:15 EST 2022. Contains 350599 sequences. (Running on oeis4.)