Exponential lower bounds for the numbers of Skolem-type sequences
نویسندگان
چکیده
It was shown by Abrham that the number of pure Skolem sequences of order n, n ≡ 0 or 1 (mod 4), and the number of extended Skolem sequences of order n, are both bounded below by 2bn/3c. These results are extended to give similar lower bounds for the numbers of hooked Skolem sequences, split Skolem sequences and split-hooked Skolem sequences.
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ورودعنوان ژورنال:
- Ars Comb.
دوره 73 شماره
صفحات -
تاریخ انتشار 2004