A086352 - OEIS

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A086352

Main diagonal of square array A086350.

1, 2, 10, 74, 740, 9354, 143144, 2573586, 53180944, 1242078802, 32358633632, 930370449370, 29264294868544, 999646208968666, 36852747307934336, 1458402092927302178, 61665517131334975744, 2774522039432235946914 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n)=((1+sqrt(2))(n+sqrt(2))^n-(1-sqrt(2))(n-sqrt(2))^n)/sqrt(8).`
	CROSSREFS	`Cf. A000169.` `Sequence in context: A000698 A092881 A004123 * A005365 A191812 A059104` `Adjacent sequences: A086349 A086350 A086351 * A086353 A086354 A086355`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jul 18 2003`

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Last modified February 15 19:15 EST 2012. Contains 205852 sequences.