Re: [math-fun] a(n), a(n+1) and a(n+2) don't share any digit

Coincidentally, Éric's earlier posts made me think of this question, so I am ready with the answer: the only terms are 0,1,2,3,4,5,6,7,8. For all higher n, either n and n+1 will have the same first digit, or n+1 and n+2 will have the same first digit. On Thu, Oct 10, 2019 at 7:38 AM Éric Angelini <bk263401@skynet.be> wrote:

Hello Math-Fun, How many terms in the hereunder finite seq? « a(n), a(n+1) and a(n+2) don't share any digit, with a(1) = 0. » Best, É.

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