For quite some time now (at least a year), whenever I tried to use Plouffe's inverter, the request timed out, but there's no indication either on the site itself or on the Web that it's out of service or having problems. Does anyone know whether it's still online? Have I just been extremely unlucky?
Also, if it really is offline or practically unusable, do you know of any alternatives? I know OEIS, but that's for integer sequences, and its use for decimal representations of real numbers feels a bit unnatural (though it has quite a few sequences of that kind).