Remarks on a paper by Chao-Ping Chen and Feng Qi

Stamatis Koumandos
2005 Proceedings of the American Mathematical Society  
In a recent paper, established sharp upper and lower bounds for the sequence P n := 1.3...(2n−1) 2.4...2n . We show that their result follows easily from a theorem of G. N Watson published in 1959. We also show that the main result of Chen and Qi's paper is a special case of a more general inequality which admits a very short proof.
doi:10.1090/s0002-9939-05-08104-9 fatcat:pc62kvcb3zca3iuzjzkhrbqvom