A080820 - OEIS

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A080820

a(n) = A080819(n)^(1/2).

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	OFFSET	`1,2`
	FORMULA	`a(n)=ceil(sqrt(n*(n+1)/2)) - C. Ronaldo (aga_new_ac(AT)hotmail.com), Dec 19 2004`
	MAPLE	`seq(ceil(sqrt(n*(n+1)/2)), n=1..80); (C. Ronaldo)`
	CROSSREFS	`Cf. A080817, A080818, A080819.` `Sequence in context: A049473 A154951 A095769 * A116549 A107079 A025528` `Adjacent sequences: A080817 A080818 A080819 * A080821 A080822 A080823`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 21 2003`
	EXTENSIONS	`More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Dec 19 2004`

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.