The next number is...

Good riddle.

48

Nope.

Is this purely maths or does it relate to something else like BloodyK's did?

Believe it or not, it is purely maths.

Well at this point in time you've got me buggered!
Can't work out how you got from 1/7 to 1/4.
Will think again later with the aid of beer.

Hmm...it looks like this is a tough one. Let me say that it is not your typical maths sequence, but is still a maths sequence.

Adrian, at my age my brain is close to meltdown, how zex got this riddle from bloodyk's post I cant work out, but is there any link between 1/7 perhaps days in a week, 1/4 weeks/month? 1/2 6 months? 1 year etc, etc, I can't see it, but then again after thirty years of draught guiness I'm not at my sharpest.