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A212276 Prime generalized Catalan numbers. 0

%I

%S 2,17,37,15101701

%N Prime generalized Catalan numbers.

%C A004148(n) for n = 3, 6, 7, 22, no more through 70. Note that Koshy and Salmassi give an elementary proof that the only prime Catalan numbers A000108 are a(2) = 2 and a(3) = 5.

%C The next term, if it exists, has more than 2000 digits. - _Charles R Greathouse IV_, May 13 2012

%F A004148 INTERSECTION A000040.

%Y Cf. A000040, A000108, A004148, A092840.

%K nonn

%O 1,1

%A _Jonathan Vos Post_, May 13 2012

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Last modified May 17 22:15 EDT 2021. Contains 343992 sequences. (Running on oeis4.)