A129589 - OEIS

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A129589

a(n) = 2*A000129(n) + A000129(n-1) - n.

1, 3, 9, 25, 65, 163, 401, 977, 2369, 5731 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`a(n)/a(n-1) tends to 1 + sqrt(2).`
	FORMULA	`a(n) = 2*A000129(n) + A000129(n-1) - n; where A000129 = the Pell sequence. a(n) = A000129(n+1) - n.`
	EXAMPLE	`a(5) = 65 = 2A000129(5) + A000129(4) - 5 = 229 + 12 - 5.` `a(5) = 65 = A000129(6) - 5 = 70 - 5.`
	CROSSREFS	`Cf. A000129.` `Sequence in context: A096260 A195417 A002064 * A096322 A058396 A006809` `Adjacent sequences: A129586 A129587 A129588 * A129590 A129591 A129592`
	KEYWORD	`nonn`
	AUTHOR	`Gary W. Adamson (qntmpkt(AT)yahoo.com), Sep 19 2007`

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Last modified February 12 11:54 EST 2012. Contains 205378 sequences.