OFFSET
1,1
COMMENTS
The D values coincide apparently with A007969 (Conway's rectangular numbers).
For a proof of this coincidence see the W. Lang link under A007969. - Wolfdieter Lang, Oct 04 2015
EXAMPLE
See A261250.
CROSSREFS
KEYWORD
nonn
AUTHOR
Wolfdieter Lang, Sep 16 2015
STATUS
approved