A132135 - OEIS

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A132135

Number of base-3 "Punctual Birds" with n base-3 digits.

2, 3, 4, 10, 20, 51, 133, 359, 975, 2700, 7506, 20962, 58968, 166170 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	LINKS	`Table of n, a(n) for n=1..14.`
	EXAMPLE	`a(2)=3 because 3 of the six 2-digit base-3 numbers appear in their natural order in the string of concatenated base-3 numbers. These 3 numbers are 3, 4 and 6 (10, 11 and 20 base-3).`
	CROSSREFS	`Cf. A132134.` `Sequence in context: A085932 A214283 A135056 * A131871 A132446 A123700` `Adjacent sequences: A132132 A132133 A132134 * A132136 A132137 A132138`
	KEYWORD	`nonn,base`
	AUTHOR	`Graeme McRae, Aug 11 2007`
	STATUS	`approved`

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Last modified June 19 01:40 EDT 2013. Contains 226359 sequences.