A133487 The first term is 256; each subsequent term in the series is computed by translating the previous term to binary, then re-interpreting the binary expression as a product of metaprimes. Metaprimes follow the form p^(2^n) where p is a prime number and n is a nonnegative integer. See the link for more detailed explanation.

256, 16, 7, 24, 35, 54, 756, 612612, 2291867200, 5127061294109100000