1,2
Every positive odd integer m==3(mod 16) is a unique sum of the form a(s) + 2a(t), while other odd integers are not expressible in such form.
If f(x)=sum_{n>=1}x^a(n), abs(x)<1, then f(x)*f(x^2)=x^3/(1-x^16).
Cf. A145818 A145812 A145849
Sequence in context: A010005 A172076 A063522 * A125992 A054402 A086533
Adjacent sequences: A145847 A145848 A145849 * A145851 A145852 A145853
nonn
Vladimir Shevelev (shevelev(AT)bgu.ac.il), Oct 21 2008
