1,1
Table of n, a(n) for n=1..5.
D. J. Bernstein, Enumerating solutions to p(a) + q(b) = r(c) + s(d)
R. L. Ekl, New Results in Equal Sums of Like Powers, Math. Comput. 67, 1309-1315, 1998.
Sequence in context: A204419 A067495 A216910 * A246252 A058445 A290540
Adjacent sequences: A047695 A047696 A047697 * A047699 A047700 A047701
nonn,hard
N. J. A. Sloane.
Corrected by D. J. Bernstein (djb(AT)cr.yp.to)
approved