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A084095 First super-diagonal of number array A084061. 3
1, 1, 5, 45, 553, 8525, 157481, 3383989, 82823777, 2272771305, 69070483549, 2301873355661, 83445967372681, 3268307044050997, 137510640882447041, 6184402325475261525, 296032663549928711041, 15025296455500536616337 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

FORMULA

a(n)=(n-sqrt(n-1))^n/2+(n+sqrt(n-1))^n/2

CROSSREFS

Cf. A084062, A084063.

Sequence in context: A189122 A062023 A169714 * A174495 A121414 A097328

Adjacent sequences:  A084092 A084093 A084094 * A084096 A084097 A084098

KEYWORD

easy,nonn

AUTHOR

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

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Last modified February 17 16:37 EST 2012. Contains 206058 sequences.