id:A019469 - OEIS Search Results

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A019469

Numbers n such that (n-2)-nd Catalan number is not divisible by n.

+0
4

2, 3, 4, 6, 8, 9, 12, 15, 16, 27, 30, 32, 33, 36, 39, 42, 64, 81, 84, 87, 90, 93, 96, 108, 111, 114, 117, 120, 123, 128, 243, 246, 249, 252, 255, 256, 258, 270, 273, 276, 279, 282, 285, 324, 327, 330, 333, 336, 339 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Conjecture: sequence is union of powers of two >1 (A000079) and 3 * A096304.`
	CROSSREFS	`Cf. A000108.` `Complement of A019470.` `Sequence in context: A097273 A006446 A002348 this_sequence A081491 A161826 A048716` `Adjacent sequences: A019466 A019467 A019468 this_sequence A019470 A019471 A019472`
	KEYWORD	`nonn`
	AUTHOR	`Wouter Meeussen (wouter.meeussen(AT)pandora.be)`

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Last modified December 5 23:38 EST 2009. Contains 170428 sequences.

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