OFFSET
1,1
LINKS
Donovan Johnson, Table of n, a(n) for n = 1..2000
CROSSREFS
Cf. A233553 for amicable quintuples.
KEYWORD
nonn
AUTHOR
EXTENSIONS
The present first term was found by Dean Hickerson, Nov 06 2006.
That this is the first term was confirmed by Giovanni Resta, Nov 14 2006, who also found a(2)-a(18).
Edited by N. J. A. Sloane, Nov 07 2006 and Nov 27 2006
STATUS
approved