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A212276 Prime generalized Catalan numbers. 0
2, 17, 37, 15101701 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

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.

The next term, if it exists, has more than 2000 digits. - Charles R Greathouse IV, May 13 2012

LINKS

Table of n, a(n) for n=1..4.

FORMULA

A004148 INTERSECTION A000040.

CROSSREFS

Cf. A000040, A000108, A004148, A092840.

Sequence in context: A258977 A069042 A121923 * A000956 A031906 A045390

Adjacent sequences:  A212273 A212274 A212275 * A212277 A212278 A212279

KEYWORD

nonn

AUTHOR

Jonathan Vos Post, May 13 2012

STATUS

approved

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Last modified June 21 08:08 EDT 2021. Contains 345358 sequences. (Running on oeis4.)