A017958 - OEIS

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A017958

Powers of sqrt(18) rounded down.

1, 4, 18, 76, 324, 1374, 5832, 24743, 104976, 445375, 1889568, 8016758, 34012224, 144301645, 612220032, 2597429617, 11019960576, 46753733110, 198359290368, 841567195983, 3570467226624, 15148209527700 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	LINKS	`Vincenzo Librandi, Table of n, a(n) for n = 0..800`
	FORMULA	`a(n) = Floor(Sqrt(18^n)); [From Vincenzo Librandi, Jun 24 2011]`
	PROG	`(MAGMA) [Floor(Sqrt(18^n)): n in [0..30]]; // Vincenzo Librandi, Jun 24 2011` `(PARI) a(n)=sqrtint(18^n) \\ Charles R Greathouse IV, Nov 18 2011`
	CROSSREFS	`Sequence in context: A084213 A048664 A108012 * A017959 A100069 A058870` `Adjacent sequences: A017955 A017956 A017957 * A017959 A017960 A017961`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 17 10:05 EST 2012. Contains 206009 sequences.