[seqfan] Re: Possibly closed expression for A026010?
M. F. Hasler
seqfan at hasler.fr
Thu Nov 8 18:41:02 CET 2018
There is an explicit closed formula hidden in cross references:
First differences of A050168 <https://oeis.org/A050168>.
Maybe yours is equivalent to that.
On 8 Nov 2018 13:09, "Peter" <petsie at dordos.net> wrote:
I've been playing with Mathematica and guess that
A026010[n_] = 2^(-1 + n)*(((2 + 3*#)*Gamma[(1 + #)/2])/(Sqrt[Pi]*Gamma[2
+ #/2]) &[n + Mod[n, 2]])
is correct (only verified it for n=0..1000).
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