.memo_generate_conservation_txis: Memoized Null Conservation TXI Generation
Description
Memoized version of generate_conservation_txis for improved performance
with repeated calls using the same parameters.
Usage
.memo_generate_conservation_txis(strata_vector, count_matrix, sample_size)
Details
This function caches results to avoid recomputing expensive permutations
when the same parameters are used multiple times.