Since Warren was interested in extreme values for A001175(n)/n, I went looking for two obvious associated sequences: indices at which A001175 hits a new record (1, 2, 3, 5, 6, 10, 25 ...) and the corresponding record values (1, 3, 8, 20, 24 ...) and neither were present. I have given here the minimum number of terms required to produce an OEIS miss. The biggest ratio I can see by eye is A001175(6250)/6250 = 6. On Mon, Jan 25, 2016 at 12:28 AM, Neil Sloane <njasloane@gmail.com> wrote:
See https://oeis.org/A001175, one of the oldest entries in the OEIS.
If your observations aren't mentioned there, please add them!
Best regards Neil
Neil J. A. Sloane, President, OEIS Foundation. 11 South Adelaide Avenue, Highland Park, NJ 08904, USA. Also Visiting Scientist, Math. Dept., Rutgers University, Piscataway, NJ. Phone: 732 828 6098; home page: http://NeilSloane.com Email: njasloane@gmail.com
On Sun, Jan 24, 2016 at 12:10 PM, Warren D Smith <warren.wds@gmail.com> wrote:
If we merely ask that period>=5*n, that happens for n=10,50,250,1250,6250,31250, and which all are of form 2*5^k, but for no other n up to 270000. Note in particular that n=156250=2*5^7 is NOT listed. In all six of these cases, the period equals 6*n.
--that's funny. Rerunning my program, this time it said n=156250 obeyed the rule (?hardware bug?), and indeed it claims the rule works for each n=2*5^k for k=1,2,3,4,5,6,7,8,9,10,11.
_______________________________________________ math-fun mailing list math-fun@mailman.xmission.com https://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun
_______________________________________________ math-fun mailing list math-fun@mailman.xmission.com https://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun