[seqfan] newbie questions regarding slightly modifying OEIS entries

andre maute andre.maute at gmx.de
Fri Jan 1 20:44:37 CET 2021


Happy new year!

I'm new to the list, so please forgive me my perhaps naive questions.

Question 1:
I'm wondering what has to be done, if one wants to update the cross references
for the following entries

http://oeis.org/A000085, has no Cf to the other two
http://oeis.org/A000704, has no Cf to the other two
http://oeis.org/A001465, has Cf to A000085 and to A000704

Question 2:
regarding A000704
a(n) = Sum_{i = 0..floor(n/4)} C(n, 4i)*(4i-1)!!
I had some minor problems with GNU Maxima due to the factor (-1)!! for i=0.
Would it be possible to slightly change this factor
from
(4i-1)!!
into
(4i)!/(4i)!!
This would also better correspond with the one given in A001465
a(n) = Sum_{i=0..floor((n-2)/4)} C(n,4i+2)*(4i+2)!/(4i+2)!!

Question 3+4:
regarding A001465 and A000704
would it be possible to slightly change the corresponding Mathematica code of A001465 also?
and add a corresponding Mathematica code snippet for A000704?

Question 5:
Does every modification to an OEIS sequences gets somehow reviewed?

Question 6:
A000704 and A001465 are somehow dual to each other.
Do sequence numbers sometime get reassigned, perhaps to reflect such symmetries?

Regards
Andre



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