A number sequence

[SusanB-M1]

To help out some friends in a quiz: What are the next two numbers in this number sequence: 1, 4, 6, 15, 17, 19? They are not worried about winning the prize (£25!) but would just like to get the answer before it is given out.

My granddaughters and I spent some time on it today, but could not come up with any logical answer. We decided that there must be a misprint or something!

[Jekyll]

http://www.research.att.com/~njas/sequences/?q=1%2C+4%2C+6%2C+15%2C+17%2C+19&language=english&go=Search

[calebprime]

alternate numbers on a dart board

at&t database of integer sequences

(gotta learn about that spoiler thang!) sorry jekyll

[SusanB-M1]

http://www.research.att.com/~njas/sequences/?q=1%2C+4%2C+6%2C+15%2C+17%2C+19&language=english&go=Search

Many thanks. We thought it would be one of those things when, as soon as you know the answer, you think, oh why didn't I think of that?!! However, in this case I don't think we would ever have come up with it because we don't play darts! And I really must remind myself that I should look things up on the internet - I must pin a large notice to the wall to remind me to think about that.

Thank you also to calebprime.

[Cuddles]

Of course this then asks for the question why are they in that order? Was there some logical reason or did someone just make it up?

[casebro]

Of course this then asks for the question why are they in that order? Was there some logical reason or did someone just make it up?


I always figured they were in that order to scamble up the high numbers from the low. I doubt if the first folks to play were as accurate as todays tourny winners, so you didn't want a near miss to give almost the same points. I suspect that 301 didn't come along until a bunch of players got good enough to hit the triple 20 on purpose.