A084182 - OEIS

This site is supported by donations to The OEIS Foundation.

A084182

3^n+(-1)^n-[1/(n+1)], where [] represents the floor function.

1, 2, 10, 26, 82, 242, 730, 2186, 6562, 19682, 59050, 177146, 531442, 1594322, 4782970, 14348906, 43046722, 129140162, 387420490, 1162261466, 3486784402, 10460353202, 31381059610, 94143178826, 282429536482, 847288609442 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`Binomial transform of A084181. a(n)/2=A046717(n), n>0.`
	FORMULA	`a(n)=3^n+(-1)^n-0^n; G.f.: (1+3x^2)/((1+x)(1-3x)); E.g.f. : exp(3x)-exp(0)+exp(-x);`
	CROSSREFS	`Except for leading term, same as A102345.` `Sequence in context: A099969 A183331 A025589 * A099583 A133479 A196324` `Adjacent sequences: A084179 A084180 A084181 * A084183 A084184 A084185`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), May 19 2003`

Content is available under The OEIS End-User License Agreement .

Last modified February 14 18:33 EST 2012. Contains 205663 sequences.