Abstract

In 1982, H. Fredricksen presented the up- per and lower bounds of the number of ones in the truth table of characteristic functions of de Bruijn sequences. In this paper, the distribution of ones in the truth table of characteristic functions of de Bruijn sequences is further studied. We provide the upper and lower bounds of the number of ones in the partial truth table of characteris- tic functions of de Bruijn sequences. Furthermore, the two bounds are tight.

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