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Search: id:A084065
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A084065 Fourth row of number array A084061. +0
4
1, 1, 7, 54, 553, 7100, 109863, 1991752, 41426257, 972602640, 25447064743, 734276705888, 23166635069241, 793426715543488, 29316839407495111, 1162492244159875200, 49240280161094287777, 2218952409252783579392 (list; graph; listen)
OFFSET

0,3

FORMULA

a(n)=(n-sqrt(3))^n/2+(n+sqrt(3))^n/2.

CROSSREFS

Cf. A084063, A084064, A084096.

Sequence in context: A152108 A093742 A014509 this_sequence A043077 A014637 A062212

Adjacent sequences: A084062 A084063 A084064 this_sequence A084066 A084067 A084068

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), May 11 2003

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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