OFFSET
0,1
COMMENTS
Row 210 of A074625 (apart from different ordering). - Michel Marcus, Dec 19 2013
LINKS
Michel Marcus, Table of n, a(n) for n = 0..209
EXAMPLE
Several numbers belonging to odd residues are either large squares or twice-squares.
E.g.: r = n = 209: a(209) = 36324729 = 6027^2, sigma(6027^2) = 210*172974 + 209.
Full set is easily available running through squares or twice squares.
CROSSREFS
KEYWORD
fini,nonn
AUTHOR
Labos Elemer, Aug 19 2004
STATUS
approved