id:A085256 - OEIS Search Results

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3-smooth numbers whose arithmetic derivatives are also 3-smooth.

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2, 3, 4, 8, 9, 12, 16, 27, 54, 64, 81, 108, 144, 256, 432, 512, 729, 972, 1728, 2916, 3072, 3456, 4096, 6561, 11664, 19683, 20736, 23328, 27648, 65536, 78732, 139968, 157464, 186624, 262144, 442368, 531441, 944784, 1062882, 1259712, 1769472 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`2^i * 3^j is a term iff 3i + 2j is 3-smooth, see A067371.`
	EXAMPLE	`144 = 2^4 * 3^2: A003415(144) = 384 = 2^7 * 3, therefore 144 is a term.`
	CROSSREFS	`Cf. A003586.` `Sequence in context: A032883 A023786 A018231 this_sequence A127483 A130804 A022999` `Adjacent sequences: A085253 A085254 A085255 this_sequence A085257 A085258 A085259`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 11 2003`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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