[seqfan] A121064

[Hans Havermann]

I would like to correct/edit/extend this sequence but before I do, I'd  
like some guidance. First of all, my context is U.S. nomenclature,  
limited to numbers < 10^66, and I would of course state this in the  
comments. I assume what is meant by "with only n letters" is the total  
number of letters contained in the number (i.e., the number "length",  
ignoring spaces/hyphens).

In my context, the given a(10)-a(17) are incorrect. Let's just look at  
one of these: The author gives a(10) = 25. But I count 24 numbers <  
100 (24, 25, 29, 34, 35, 39, 43, 47, 48, 53, 57, 58, 63, 67, 68, 71,  
72, 76, 84, 85, 89, 94, 95, 99), another 3 < 1000 (100, 200, 600), and  
another 8 beyond that (1000000, 2000000, 6000000, 10000000,  
1000000000, 2000000000, 6000000000, 10000000000), so my entry for  
a(10) would be 35. The variances for subsequent terms are much larger.

So, should I go ahead and change things, or is there some context in  
which the authors numbers still make sense?