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

M. F. Hasler oeis at hasler.fr
Sat Nov 2 20:32:37 CET 2013

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:


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

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.

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