[seqfan] Re: Is A290646 = A135517?

Alonso Del Arte alonso.delarte at gmail.com
Tue Aug 8 20:22:09 CEST 2017

In trying to answer this question, I've come up with more questions and no
answers. What's another formula for A091090? I tried

binary weight(n XOR n + 1)

implemented in Mathematica with DigitCount and BitXor. This matches A1511
for the terms I've looked at, but I can't say for sure that this is indeed
a formula for A1511

 Perhaps with one judicious adjustment it's possible to turn A1511 into
A091090. Something like A001511[[n]] - Boole[IntegerQ[Log[2, n]]].


On Tue, Aug 8, 2017 at 12:18 PM, Peter Luschny <peter.luschny at gmail.com>

> Thankful for any comment.
> Peter
> http://oeis.org/search?q=id:A290646|id:A135517
> --
> Seqfan Mailing list - http://list.seqfan.eu/

Alonso del Arte
Author at SmashWords.com
Musician at ReverbNation.com <http://www.reverbnation.com/alonsodelarte>

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