[Haskell-cafe] Zumkeller numbers

[Frank Buss]

> From: daniel.is.fischer at web.de [mailto:daniel.is.fischer at web.de]

> > Not related to Haskell, but do you think semi-Zumkeller numbers are
> > semi-perfect numbers?
> 
> The site you linked to says so. I've not investigated.

Peter Luschny posted the link in a discussion in a German newsgroup: 

http://tinyurl.com/y9kfdpf

Currently it is a conjecture and needs a proof before posting it to Sloane's integer sequences archive.

-- 
Frank Buss, fb at frank-buss.de
http://www.frank-buss.de, http://www.it4-systems.de