On Sat, 01 December 2001,

d.broadhurst@... wrote:

>

> Phil: As for "triplet middles": try the analyis mod 30. David

As you may have worked out - I did have my doubts, then I had my doubts about my doubts :-|. However, I'm convinced that for at least 10 minutes last night I was actualy correct, evem if for the wrong reason.

Explicitly:

1 5 7 5 alone

5 7 11 7 alone

7 11 13 30n+11

11 13 17 30n+13

13 17 19 30n+17

17 19 23 30n+19

Therefore the gamut of sums is

30n + { 0, 4, 6, 8, 22, 24, 26, 28 }

and occasional 30n + { 16, 18, 20 }

Which falls somewhat short of the mark.

Oh well.

Phil

Don't be fooled, CRC Press are _not_ the good guys.

They've taken Wolfram's money - _don't_ give them yours.

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