OFFSET
1,2
COMMENTS
Numbers m = A024916(k) / k such that A024916(k) / k is integer for any k. If a(14) exist must be bigger than 82000.
Corresponding values of k, and sum_(k=1...n) sigma(k) are given in A056550 and A168133. [From Jaroslav Krizek, Nov 21 2009]
EXAMPLE
Number a(3) = 7 is in sequence because A024916(8) / 8 = 56 / 8 = 7 is integer for k = 8.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jaroslav Krizek, Nov 18 2009, Dec 04 2009
EXTENSIONS
a(14)-a(25) from Donovan Johnson, Jun 16 2011
STATUS
approved