id:A140134 - OEIS Search Results

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a(n)=2a(n-1) but when sum of digits is greather than 9 take greater number below with digits sum = 9.

+0
1

1, 2, 4, 8, 16, 32, 63, 126, 252, 504, 1008, 2016, 4032, 8001, 16002, 32004, 63000, 126000, 252000, 504000, 1008000, 2016000, 4032000, 8001000, 16002000, 32004000, 63000000, 126000000, 252000000, 504000000, 1008000000, 2016000000 (list; graph; listen)

	OFFSET	`0,2`
	CROSSREFS	`Cf. A062259.` `Sequence in context: A062259 A001949 A001592 this_sequence A049886 A128901 A025489` `Adjacent sequences: A140131 A140132 A140133 this_sequence A140135 A140136 A140137`
	KEYWORD	`nonn`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Jun 15 2008`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

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