The ratio log-concavity of the Cohen numbers
Abstract Let U n $U_{n}$ denote the nth Cohen number. Some combinatorial properties for U n $U_{n}$ have been discovered. In this paper, we prove the ratio log-concavity of U n $U_{n}$ by establishing the lower and upper bounds for U n U n − 1 $\frac{U_{n}}{U_{n-1}}$ .
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2016-11-01
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| Series: | Journal of Inequalities and Applications |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s13660-016-1217-7 |