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Extended Dataset Generated by the OEIS Integer Sequence A376895: Primes of the Form 3^k*k^3 + 2.

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Figshare2024-12-23 更新2026-04-28 收录
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https://figshare.com/articles/dataset/_b_Extended_Dataset_Generated_by_the_OEIS_Integer_Sequence_A376895_Primes_of_the_Form_3_k_k_3_b_b_2_b_/28087496
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This integer sequence was registered and published in the On-Line Encyclopedia of Integer Sequences (OEIS.org) Database on October 08 - 2024, under the OEIS code: A376895.This sequence can be expressed with the help of a general formula that uses the OEIS-indexed sequence A366997which are the integers n such that a(n) = 3n *n3 + 2 is a prime number. This general formula is such that:a(n) = 3^A366997 * A366997^3 + 2.Some interesting properties of this sequence are:◼ The next term a(8) = ∼2.20847 x10143 is too large to include in the standard OEIS format.◼ a(9) = ∼8.66244 x10153.◼ a(10) = ∼9.21872 x10433.◼ This sequence is constituted by primes of the forms A002145 and A002144, with the exception of 2.◼ The last known integer k in A366997 is 20803 and corresponds to a(13) = ∼3.21988 x109938.The numerical data showed on this dataset was generated by the following Mathematica program:Select[Table[3^k*k^3+2, {k, 0, 10000}], PrimeQ]The previous program was builded on Mathematica v13.3.0.Note: More mathematical details, graphics and technical information can be found in the notebook (.nb) & pdf files provided in this data pack.
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2024-12-23
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