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I wanted to know the General term or the function to generate this sequence I found on OEIS. It is the number of ways to express $2n+1$ as $p+2q$; where $p$ and $q$ can be odd prime number and even semiprime not necessarily distinct.

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    $\begingroup$ There will not be anything nice. $\endgroup$ – André Nicolas Apr 9 '13 at 2:36
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There is no formula for the general term of the sequence A046927. The conjecture that the sequence consists of positive integers remains open.

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  • $\begingroup$ Then how did they generate the sequence up to 1000 terms? $\endgroup$ – Adwait Kumar Jun 4 '13 at 14:45
  • $\begingroup$ @AdwaitKumar The page to which you linked has Mathematica code for computing this sequence. $\endgroup$ – ˈjuː.zɚ79365 Jun 4 '13 at 14:58

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