aaah! typo! Concerning Bill Gosper's conjectured (but apparently incorrect beyond a certain point, according to a subsequent posting by Robert Munafo) series, I added it to the OEIS as A178449 [I had mistyped A178448, sorry] I also added the sequence of coefficients of 1/j_revert: A178451, (which is really close to Bill's, but different) where j_revert is A091406, the reversion of the j-function A000521. Robert, could you add a further sequence, the correct version of Bill's, if you found it? Thanks! Neil