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 A133487 The first term is 256; each subsequent term in the series is computed by translating the previous term to binary, then reinterpreting the binary expansion 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. 0
 256, 16, 7, 24, 35, 54, 756, 612612, 2291867200, 5127061294109100000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The next term is larger than 2^64. LINKS Will Nicholes, Metaprime binary series.. FORMULA a(0)=256, a(n) = A052330(a(n-1)). EXAMPLE 35 decimal is 100011 binary; 100011 is reinterpreted as (9^1)(7^0)(5^0)(4^0)(3^1)(2^1) = 54. CROSSREFS Cf. A079708. Sequence in context: A139305 A160514 A203813 * A342039 A188830 A103949 Adjacent sequences:  A133484 A133485 A133486 * A133488 A133489 A133490 KEYWORD nonn,more AUTHOR Will Nicholes, Nov 30 2007 STATUS approved

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Last modified April 20 15:21 EDT 2021. Contains 343135 sequences. (Running on oeis4.)