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arXiv · 1508.02580

A method for determining the mod-$p^k$ behaviour of recursive sequences

Christian Krattenthaler·Thomas W. Müller
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Abstract

We present a method for obtaining congruences modulo powers of a prime number~$p$ for combinatorial sequences whose generating function satisfies an algebraic differential equation. This method generalises the one by Kauers and the authors [Electron. J. Combin. 8(2) (2012), Art. P37; arXiv:1107.2015] from $p=2$ to arbitrary primes. Our applications include congruences for numbers of non-crossing graphs and numbers of Kreweras walks modulo powers of~$3$, as well as congruences for Fu\ss-Catalan numbers and blossom tree numbers modulo powers of arbitrary primes.

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Christian Krattenthaler, Thomas W. Müller. 2015-08-11. A method for determining the mod-$p^k$ behaviour of recursive sequences. https://arxiv.org/abs/1508.02580

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