1,2
The terms of the sequence are the squares of the y-values in the solution to the Pellian equation x^2-10*y^2=4. - Colin Barker, Sep 28 2013
Table of n, a(n) for n=1..11.
Empirical G.f.: -144*x^2*(x+1) / ((x-1)*(x^2-1442*x+1)). [Colin Barker, Jan 31 2013]
A023112(n) = 4*A023111(n). [Colin Barker, Sep 28 2013]
Sequence in context: A221124 A008700 A047807 * A159424 A013751 A033514
Adjacent sequences: A023109 A023110 A023111 * A023113 A023114 A023115
nonn,base
David W. Wilson
approved