A017966 - OEIS

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A017966

Powers of sqrt(20) rounded up.

1, 5, 20, 90, 400, 1789, 8000, 35778, 160000, 715542, 3200000, 14310836, 64000000, 286216702, 1280000000, 5724334023, 25600000000, 114486680448, 512000000000, 2289733608960, 10240000000000, 45794672179196 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	LINKS	`Vincenzo Librandi, Table of n, a(n) for n = 0..700`
	MATHEMATICA	`Ceiling[(Sqrt[20])^Range[0, 40]] (* Vincenzo Librandi, Nov 21 2011 *)`
	PROG	`(MAGMA) [Ceiling(Sqrt(20^n)): n in [0..30]]; // Vincenzo Librandi, Nov 21 2011`
	CROSSREFS	`Sequence in context: A099014 A011966 A192249 * A196532 A002745 A182959` `Adjacent sequences: A017963 A017964 A017965 * A017967 A017968 A017969`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 15 08:43 EST 2012. Contains 205734 sequences.