Big numbers, programming contest

[Ed Pegg Jr]

Don Reble wrote:
> Ed Pegg Jr wrote:
> 
>>http://www.research.att.com/projects/OEIS?Anum=A023199
> 
> 
>>{3!, 5!, 11#3!2, 17#5!2, 29#7!4, 53#7!12, 89#11!2,
>>157#17#8!6, ???, 487#*29#*10!/2}
> 
> 
> The missing term is 271#23#10! .

I verify this

> 
> That last term (487#29#10!/2) is wrong; it has sigma/n = 10.995-.
> It should be just 487#29#10! .

I verify this, too.  My original code had a rounding error.

> 
> The next term is 857#37#11!42 .

I verify this, too.  Beats the number I had.

For the next term I have 1487#59#15!/6   -- but it may be beatable.

Ed Pegg Jr