[seqfan] What is in a name? A161621

[John W. Nicholson]

I don't know where to start. Can someone simply this title?

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A161621     Numerators of the ratios (in lowest terms) of numbers of primes in one square interval to that of the interval and its successor. The numerators are derived from sequence A014085. The expression is: R(n)=(PrimePi[(n+1)^2] - PrimePi[n^2])/(PrimePi[(n+2)^2] - PrimePi[n^2]); The first few ratios are: 1/2, 2/5, 3/5, 1/3, 4/7,... 
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John W. Nicholson