A131097 - OEIS

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A131097

Sum of digits of 3-smooth numbers in ternary representeation.

1, 2, 1, 2, 2, 4, 1, 2, 4, 2, 4, 1, 4, 2, 4, 2, 4, 4, 1, 4, 2, 6, 4, 2, 4, 4, 1, 4, 4, 2, 6, 4, 2, 8, 4, 4, 1, 4, 4, 2, 8, 6, 4, 2, 8, 4, 4, 10, 1, 4, 4, 2, 8, 6, 4, 10, 2, 8, 4, 4, 10, 1, 4, 4, 8, 2, 8, 6, 4, 10, 2, 8, 4, 10, 4, 10, 1, 4, 4, 8, 2, 8, 6, 16, 4, 10, 2, 8, 4, 10, 4 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`a(n) = A053735(A003586(n)); values are even iff greater than 1.`
	LINKS	`Eric Weisstein's World of Mathematics, Digit Sum` `Eric Weisstein's World of Mathematics, Ternary`
	CROSSREFS	`Sequence in context: A130831 A151678 A151681 * A062790 A046640 A049823` `Adjacent sequences: A131094 A131095 A131096 * A131098 A131099 A131100`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 14 2007`

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Last modified February 16 12:15 EST 2012. Contains 205909 sequences.