id:A133375 - OEIS Search Results

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Catalan numbers with digits sorted in increasing order and zeros suppressed.

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1, 1, 2, 5, 14, 24, 123, 249, 134, 2468, 16679, 56788, 1228, 2479, 244467, 4456899, 3355677, 12446799, 3467778, 112366779, 12244566, 222446667, 1234456689, 1333455669, 112234447899 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`This is to A000108 as A135374 is to A000225 and as A078726 is to A000215. Of the values through a(24), the only primes are the two prime Catalan numbers 2 and 5. What is the first prime in this sequence which is not an untransformed Catalan number?`
	FORMULA	`A004185(A000108(n)) = A004185((2n)!/(n!(n+1)!)).`
	CROSSREFS	`Cf. A000108, A004185, A078726, A135374.` `Sequence in context: A131661 A076664 A049939 this_sequence A057295 A100779 A022630` `Adjacent sequences: A133372 A133373 A133374 this_sequence A133376 A133377 A133378`
	KEYWORD	`base,easy,nonn,less`
	AUTHOR	`Jonathan Vos Post (jvospost3(AT)gmail.com), Dec 21 2007`

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Last modified December 4 20:00 EST 2008. Contains 151309 sequences.

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