[seqfan] Possibly closed expression for A026010?

[Peter]

Hi seqfans,

 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).

Best regards.

Peter