Journal of Integer Sequences, Vol. 17 (2014), Article 14.1.1

Periodicity of the Last Digits of Some Combinatorial Sequences

István Mező
Escuela Politécnica Nacional
Departamento de Matemática
Ladrón de Guevara E11-253
Quito, Ecuador


In 1962 O. A. Gross proved that the last digits of the Fubini numbers (or surjective numbers) have a simple periodicity property. We extend this result to a wider class of combinatorial numbers coming from restricted set partitions.

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(Concerned with sequences A000085 A000296 A000670 A001680 A001681 A006505 A032032 A057693 A057837 A070945 A102233.)

Received August 21 2013; revised version received December 4 2013. Published in Journal of Integer Sequences, December 5 2013.

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