A139473 - OEIS

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A139473

a(n)=((2*Sqrt[2] + 3)^(2^(n - 1) - 1) - (3 - 2*Sqrt[2])^(2^(n - 1) - 1))/(4*Sqrt[2]).

0, 1, 35, 40391, 53789260175, 95393218491883573553951, 300027707381709879256191290532493317737977820735 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	MATHEMATICA	`Table[Expand[((2Sqrt[2] + 3)^(2^(n - 1) - 1) - (3 - 2Sqrt[2])^(2^(n - 1) - 1))/(4Sqrt[2])], {n, 1, 10}] (Artur Jasinski*)`
	CROSSREFS	`Cf. A001109, A139474, A139475, A139476.` `Sequence in context: A030261 A007102 A196542 * A110596 A126029 A107736` `Adjacent sequences: A139470 A139471 A139472 * A139474 A139475 A139476`
	KEYWORD	`nonn`
	AUTHOR	`Artur Jasinski (grafix(AT)csl.pl), Apr 22 2008`

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Last modified February 16 09:50 EST 2012. Contains 205904 sequences.