[seqfan] Re: Help! Any formula for sequence

[israel at math.ubc.ca]

For #1, gfun guesses the gf: 
(2*x^3+x^2-10*x-3)/((x-1)*(x^2+2*x-1)*(x^2-2*x-1)). For #2, 
-(2*x^3+x^2-11*x-4)/((x^2+2*x-1)*(x^2-2*x-1)).

Cheers,
Robert

On May 3 2015, Zak Seidov wrote:

> Dear SF Gurus,
>
>Help! Any formula for sequence
>
>{3,13,30,88,187,525,1102,3072,6435,17917,37518,104440,218683,608733,
>1274590,3547968,7428867,20679085,43298622,120526552,252362875}
>Any formula, recurrency, genersting function, etc?
>
>The same for relating sequence
>4,11,23,64,134,373,781,2174,4552,12671,26531,73852,154634,430441,
>901273,2508794,5253004,14622323,30616751,85225144,178447502}
>
>Thx,
>Zak
>
> PS These are solution for some quadratic Diophantine Eq and surely should 
> be some formula(s).
>
>
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