z
                                                             (-1)  z!
  The best delta for the cnk's (n+k=20) for log(2), using, ------------,  is
                                                           (x + z + 1)!

.076259662103967570229310565410634949349611542383937590207074443512215102579\

    413958388383706143495153, [10, 10]

The best delta for the cnk's (n+k=20) for Zeta(2), using,

                   z
               (-1)  z!
    2 --------------------------,  is
      (x + z + 1) (2 x + z + 1)!

-.09346795994127957370539727148812048562017928584532035108217648621104781650\

    62259218814412499400882533, [10, 10]

The best delta for the cnk's (n+k=20) for Zeta(3), using,

                z!
    ---------------------------,  is
                              2
    (2 x + z + 1)! (x + z + 1)

-.40343744286593895346772282751615061715924032946333541239801892178797843963\

    45976799476151442339423652, [6, 14]

                     The best delta for the cnk's (n+k=20)

                                            z             2
                                        (-1)  ((z + 1/2)!)
              for 1-Catalan, using, 1/4 -------------------,  is
                                                          2
                                        ((2 x + z + 3/2)!)

-.47796352974379108525857893337603778347988613309547075824608020235665208072\

    03719256287270456981295668, [12, 8]