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COMMENTS
| If the upper limit is changed to include 10^n, the entries are increased by 1 for n = 3, 4, 5,.. and perhaps others, because 1000, 10000 and 100000 are not sums of consecutive primes, whereas 10=2+3+5 and 100=2+3+5+...+19+23 are. [R. J. Mathar, (mathar(AT)strw.leidenuniv.nl), Oct 10 2010]
Based on work of Enoch Haga, Jud McCranie and Felice Russo
The ratio a(n)/10^n might be converging to 0.52..., it might also be slowly growing to 1, which way is it? - Daniel Forgues, Nov 03 2011
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