Is there any easy way to do calculations with sequences from OEIS online? For example I would like to input something like:

(A007620(n+1) / 2 )  + A000027(n)

and then get something like

4, 8, 12, 14, 17, 20, ...

I tried Wolfram Alpha which can access the sequences but I did not find any way to calculate with them there.

  • 1
    $\begingroup$ I assume you have studied this already! $\endgroup$ Jan 29, 2015 at 22:23
  • $\begingroup$ @DroneScientist wow, no I was not aware of this $\endgroup$ Jan 29, 2015 at 22:23
  • $\begingroup$ @DroneScientist feel free to post this as an answer to collect the 50 bounty $\endgroup$ Jan 29, 2015 at 22:24

2 Answers 2


The problem is well discussed here!

One may write functions in Mathematica that work with OEIS data and some of the answers include functionality that one may build upon.


If I am writing a program to handle the data, I would just copy the first few hundred terms of the series into a txt document and directly access it as an array.


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