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Repetition of the last digits of a tetration of generic base

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Repetition of the last digits of a tetration of generic base
marcokrt Offline
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#13
12/16/2021, 12:26 AM
P.S. The V(a) formula I was talking about can be found here (NNTDM, 27(4), pp. 43-61): The congruence speed formula.
Let \(G(n)\) be a generic reverse-concatenated sequence. If \(G(1) \notin \{2, 3, 7\}\), then \(^{G(n)}G(n) \pmod {10^d}≡^{G({n+1})}G({n+1}) \pmod {10^d}\), \(\forall n \in \mathbb{N}-\{0\}\)
("La strana coda della serie n^n^...^n", p. 60).
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RE: Repetition of the last digits of a tetration of generic base - by marcokrt - 12/16/2021, 12:26 AM

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