[seqfan] Re: Colorless integers

Hans Havermann pxp at rogers.com
Wed Feb 23 01:45:53 CET 2011


Robert Gerbicz:

> Does it have a loop of length two?

No. Let {a,b} represent such a loop with a<b.

b=a+s(a)
a=b-s(b) => b=a+s(b) => s(a)=s(b)
but s(a) is even and s(b) is odd, a contradiction



More information about the SeqFan mailing list