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A146005 n*Lucas(n). 1
0, 1, 6, 12, 28, 55, 108, 203, 376, 684, 1230, 2189, 3864, 6773, 11802, 20460, 35312, 60707, 104004, 177631, 302540, 513996, 871266, 1473817, 2488368, 4194025, 7057518, 11858508, 19898116, 33345679, 55814940, 93320819, 155867104 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

FORMULA

a(n)=n*A000032(n). G.f.: x(1+4x-x^2)/(1-x-x^2)^2. a(n)=2*a(n-1)+a(n-2)-2*a(n-3)-a(n-4). a(n)=A000045(n)-5*A000045(n+1)+5*A010049(n+1). a(n)=A045925(n)+2*A099920(n-1).

MATHEMATICA

Table[LucasL[n, 1]*n, {n, 0, 36}] [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jul 09 2009]

CROSSREFS

Sequence in context: A057341 A068412 A183026 * A109510 A034715 A079390

Adjacent sequences:  A146002 A146003 A146004 * A146006 A146007 A146008

KEYWORD

easy,nonn

AUTHOR

R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 26 2008

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Last modified February 13 12:58 EST 2012. Contains 205482 sequences.