OFFSET
3,4
LINKS
P. A. MacMahon, Divisors of numbers and their continuations in the theory of partitions, Proc. London Math. Soc., (2) 19 (1919), 75-113; Coll. Papers II, pp. 303-341.
MATHEMATICA
max = 80; s = Sum[q^(m1 + m2)/((1 + q^m1)*(1 + q^m2)), {m1, 1, max-1}, {m2, m1+1, max}]; CoefficientList[Series[s, {q, 0, max}] , q][[4 ;; max]] (* Jean-François Alcover, Jan 21 2014 *)
CROSSREFS
KEYWORD
easy,sign
AUTHOR
N. J. A. Sloane, Mar 19 2001
EXTENSIONS
More terms from Vladeta Jovovic, Nov 11 2001
STATUS
approved