read JACK:

print(`Let m[lambda] be the monomial symmetric functions in the`):
print(`negative shift operators A[1],A[2],A[3], in the discrete variables a1,a2,a3 respectively,`):
print(`corresponding to the partition lambda`):
print(``):

print(`The recurrence satisfied by`):

F:=
((x1^2+x1*x2+x2^2)/x3^2)^(a1)*
((x1^2+x1*x3+x3^2)/x2^2)^(a2)*
((x2^2+x2*x3+x3^2)/x1^2)^(a3):
print(F):
print(`and hence by its constant terms is`):

GuessRecSym((x1^2+x1*x2+x2^2)/z^2,[x1,x2],z,  10,m);

print(`---------------`):
print(`This took`, time(), `seconds `):

quit: