[seqfan] Re: Fwd: Add neighbours, use their digits

[M. F. Hasler]

Dear SeqFans,

Eric made precise that multiplicity must be respected, e.g. 72,5 is not
admissible beause two digits 7 are required. Then the sequence (which I
propose as https://oeis.org/draft/A228276) reads:

1,10,2,19,72,100,3,20,4,30,5,40,6,50,7,60,8,70,9,12,79,18,13,68,113,198,21,91,32,181,130,
170,131,82,120,80,101,89,109,23,69,27,14,28,54,17,24,58,117,124,90,11,200,15,36,26,37,126,93,41,273,52,163,29,63,107,123,96,71,230,73,...

So 100 comes "to help" earlier, but 73 much later.
My PARI code is given in https://oeis.org/draft/A228276
Best regards,
Maximilian

On Sat, Nov 2, 2013 at 5:22 AM, Eric Angelini <Eric.Angelini at kntv.be> wrote:

> > Hello SeqFans,
> > this is a nightmare to compute by hand:
> > S = 1,10,2,19,73,100,3,20,4,39,54,...
> > Let R be a(n)+a(n+1)
> > We want R to be written with some (or
> > all) the digits belonging to a(n) or a(n+1) or both.
>