Hi, i can't find a relation between the terms of the following series:

(i.e how to get the next term by relating to previous term(s).)

The series is:

2,6,20,70,252,924,3432,...

Thanks.

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- March 13th 2011, 08:20 AMpranayRelation between the terms of series
Hi, i can't find a relation between the terms of the following series:

(i.e how to get the next term by relating to previous term(s).)

The series is:

2,6,20,70,252,924,3432,...

Thanks. - March 13th 2011, 08:45 AMCaptainBlack
You type it into the >>Online Encyclopaedia of Integer Sequences<<.

Then you note that there is no unique solution to such questions. In fact the only correct answer is "What would you like it to be"

CB - March 13th 2011, 08:56 AMSambit
These are the terms for for .

- March 13th 2011, 12:09 PMpranay
- March 13th 2011, 12:59 PMOpalg
These numbers are closely related to the Catalan numbers. They satisfy the recurrence relation

- March 13th 2011, 03:52 PMCaptainBlack
- March 13th 2011, 08:26 PMpranay