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A102307 Central column of triangle A016095. 1
1, 4, 30, 260, 2380, 22428, 215292, 2093520, 20553390, 203280220, 2022339176, 20215564824, 202879303900, 2042865050800, 20629119101400, 208829908532880, 2118554718825420, 21533269718832300 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

a(n)=Fibonacci(2n+1)*binomial(2n,n)= A000045(2n+1)*A000984(n) . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Oct 14 2006

EXAMPLE

a(0)=F(1)*C(0,0)=1*1=1 ; a(1)=F(3)*C(2,1)=2*2=4 ; a(2)=F(5)*C(4,2)=5*6=30 ; a(3)=F(7)*C(6,3)=13*20=260 ; ...

CROSSREFS

Equals A016095(n, n).

Sequence in context: A086452 A091527 A201200 * A052658 A179540 A172392

Adjacent sequences:  A102304 A102305 A102306 * A102308 A102309 A102310

KEYWORD

nonn

AUTHOR

Ralf Stephan, Jan 03 2005

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Last modified February 15 21:56 EST 2012. Contains 205860 sequences.