I'll edit the sequence. If you do not see the edit within 10 days, remind me. Note the L-system I gave for the binary expansion, giving a divisionless method for computation. Best, jj * Bill Gosper <billgosper@gmail.com> [Apr 16. 2014 20:05]:
(A014578 <http://oeis.org/A014578>) Out[665]= k (-1) Sum[--------, {k, 0, ∞}] k 3 2 - 1
In[666]:= RealDigits[% /. ∞] -> 4, 8]
Out[666]= {{{6, 6, 7, 6, 6, 7, 6, 6, 6, 6, 6, 7, 6, 6, 7, 6, 6, 6, 6, 6, 7, 6, 6, 7, 6, 6, 7}}, 0} --Bill (As computed by the Life pattern x = 50, y = 50, rule = B3/S23 26b3o11b3o$26bo2bo10bo2bo$26bo6b3o4bo$26bo5bo2bo4bo$27bo4bo3bo4bo$33b 4o$bo8b2o23bo$o8b4o$o3bo [wow, great intro!] 3b2ob2o28bo$4o5b2o29b3o$40bob2o$41b3o$41b2o$4b 2o$2b2ob2o$2bo2bo$2bo2bo$3b2o$24b3o$24bo2bo$bo22bo$o23bo$o3bo14bo5bo$ 4o14bo$18bo3bo5 [...amazing development... ] b4o$18b4o5bo3bo$31bo14b4o$24bo5bo14bo3bo$25bo23bo$25bo 22bo$22bo2bo$23b3o$45b2o$44bo2bo$44bo2bo$43b2ob2o$44b2o$7b2o$6b3o$6b2o bo$7b3o29b2o5b4o$8b [but this part could stand polishing; it's not clear what b02bo is doing at all] o28b2ob2o3bo3bo$37b4o8bo$14bo23b2o8bo$13b4o$8bo4bo 3bo4bo$9bo4bo2bo5bo$9bo4b3o6bo$6bo2bo10bo2bo$7b3o11b3o! [but that grand finale saves everything!] misnamed thue.)
What the heck is this ⬇? I can't delete it.
Char: ⬇ (11015, #o25407, #x2b07, file ...) point=1577 of 1803 (87%) column=28 Doesn't render as character in emacs (version 24.3.4), invalid UTF-8?
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