0,3

Partial sums are A129371.

G.f.: x(1+4x+5x^2+4x^3)/(1-x^2)^3; a(n)=((7n^2+2n-1)+(n-1)^2(-1)^n)/8;

Sequence in context: A076488 A092259 A036693 this_sequence A053688 A036302 A032377

Adjacent sequences: A129367 A129368 A129369 this_sequence A129371 A129372 A129373

easy,nonn

Paul Barry (pbarry(AT)wit.ie), Apr 11 2007