[seqfan] Some formulas and identities for A268289 (binary digits sums + Takagi function)

[Thomas Baruchel]

Dear fellow SeqFans,

five months ago, I spent some days studying A268289 and proving some identities; then I went into other interests and kept my work aside for further investigations, but since I haven't done anything more I decided to put it online in case other may have some interest for it.

You can find it at https://arxiv.org/abs/1908.02250

Feel free to pick any interesting formula or property for the OEIS database. Of course, if you see seomthing to fix in it, please let me know and I will take the time to make the required changes.

Regards,
-- 
th. baruchel