[seqfan] Re: Two neighboring digits sum up to a prime

[Hans Havermann]

Maximilian Hasler:

> I wonder whether it makes sense to create the "new S" for any subset
> of {0...18} which yields a nontrivial result....
> But why not, after all this will yield a finite and relatively small
> number of additional sequences...

Aren't there a total of 524287 subsets? Do we know that most of these  
are trivial?