[seqfan] Augusto Santi's A351871

Neil Sloane njasloane at gmail.com
Tue Sep 20 07:50:02 CEST 2022

Robert Gerbicz made some very interesting discoveries and conjectures
which are now part of A351871.

Let me encourage people who have more comments to post them to this mailing
list, so everyone can see them.

I was hoping that when one compared the graphs of these 4 sequences A351871
& A355914; A355898 & A355899,  it would reveal some profound truth, but I
don't see it.

Another suggestion: Let a(n) = A351871(n).  Plot the successive points in
the plane given by (a(1),a(2)), (a(2),a(3)),  (a(3),a(4)), ... What does
their trajectory look like? Ditto for A355898.
This was a device used with great success by Remy Sigrist in explaining the
"Breche de Roland" sequence from earlier this summer.
Best regards

Neil J. A. Sloane, Chairman, OEIS Foundation.
Also Visiting Scientist, Math. Dept., Rutgers University,
Email: njasloane at gmail.com

More information about the SeqFan mailing list