OFFSET
1,1
COMMENTS
Conjecture: For every k in the sequence, the number k^2 is in the sequence as well.
Composite numbers in the sequence which are not perfect squares are 143, 147, 171, 183 etc. [R. J. Mathar, May 16 2009]
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladimir Shevelev, May 07 2009
EXTENSIONS
Edited and extended by R. J. Mathar, May 16 2009
STATUS
approved