id:A116150 - OEIS Search Results

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a(n)= Sum[3^i+(-2)^i,{i,n}].

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1, 14, 33, 130, 341, 1134, 3193, 10010, 29181, 89254, 264353, 799890, 2386021, 7185374, 21501513, 64613770, 193622861, 581305494, 1743042673, 5230875650, 15689131701, 47074385614, 141209175833, 423655489530, 1270910544541 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n)=(1/6)(93^n+4*(-2)^n -13)`
	EXAMPLE	`First primes are a(11)=264353 and a(17)=193622861. More primes?`
	CROSSREFS	`Sequence in context: A107484 A076329 A090090 this_sequence A019272 A018949 A007365` `Adjacent sequences: A116147 A116148 A116149 this_sequence A116151 A116152 A116153`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)gmail.com), Apr 14 2007`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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