Deletion of Factoriangular number

Comment: when I created this (it was at Requested Articles), I assumed that more work on this would exist. This doesn't seem to be true, so perhaps this article is |too soon. Sorry to {{u|D.Lazard}} for removing the PROD
Stance: delete
Cited policy: Wikipedia:Too soon (WP:TOOSOON)

Comment: The article cites five recent papers, but they are all by the same people — I would need to see papers from at least two independent research groups before I think there can be a plausible claim of having the multiple ''independent'' reliable sources requested by . In addition, and perhaps even more seriously, all five are (or maybe rather were, since the list is down) on Beall's list of predatory open access publishing|predatory open access publishers (APJMR as a standalone journal, IndJST from its publisher), so they are not reliable and we cannot use them as sources. That leaves only OEIS, and although I do consider OEIS reliable (any change there has to be reviewed by an editorial board) I don't think we should have articles whose only sourcing is from OEIS. And also note that OEIS omitted their "nice" tag, which they use for non-boring sequences
Stance: delete
Cited policy: Wikipedia:Notability (WP:GNG)