#16662: OA for n=1046,1059,2164,3992,3994
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Reporter: ncohen | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.4
Component: combinatorial | Resolution:
designs | Merged in:
Keywords: | Reviewers:
Authors: Nathann Cohen | Work issues:
Report Upstream: N/A | Commit:
Branch: u/ncohen/16662 | 8fcaed066b7f110af10c6a471cbebcad370bd312
Dependencies: #16604 | Stopgaps:
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Comment (by vdelecroix):
Hello,
It is not only caching. With a more naive approach you would have
{{{
for a in xrange(n):
if not orthogonal_arrays(k,a,existence=True):
continue
for b in xrange(a+1):
if not orthogonal_arrays(k,b,existence=True):
continue
for c in xrange(b+1):
if not orthogonal_arrays(k,c,existence=True):
continue
}}}
About your caching system, what would be the difference between
`is_available` and `exists`? And instead of `all_n` I would prefer
`nrange` or something more pythonic.
I will write some doc but I won't change the code.
Vincent
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Ticket URL: <http://trac.sagemath.org/ticket/16662#comment:22>
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