1,4

q + p = 2*n and p*q = ((q+p)/2)^2 - ((q-p)/2)^2 = n^2 - ((q-p)/2)^2.

Essentially the same as A020482. - R. J. Mathar, Oct 24 2009

Pierre CAMI, Table of n, a(n) for n = 1..55000

Sequence in context: A078496 A114521 A258653 * A231935 A216835 A033932

Adjacent sequences: A159479 A159480 A159481 * A159483 A159484 A159485

nonn

Pierre CAMI, Apr 14 2009

approved