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A006453 Expansion of 1/sqrt(1-12x+x^2). 0
1, 6, 107, 3186, 132849, 7122870, 466788195, 36153055890, 3230902408545, 327238250094630, 37043457415695675, 4634751809368192050, 635113491345511326225, 94599619441277679278550 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..13.

J. Shallit, Letter to N. J. A. Sloane, Oct. 1975

FORMULA

D-finite with recurrence: a(n) +6*(-2*n+1)*a(n-1) +(n-1)^2*a(n-2)=0. - R. J. Mathar, Jan 17 2020

CROSSREFS

Sequence in context: A214349 A305134 A083432 * A251667 A127213 A129003

Adjacent sequences:  A006450 A006451 A006452 * A006454 A006455 A006456

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified May 31 15:41 EDT 2020. Contains 334748 sequences. (Running on oeis4.)