a(n) = number of polynomials of degree 4 in a regular Groebner basis (graded reverse lexicographic order) of n quadratic polynomials in n variables.
Discussion
Thu Oct 05
14:33
N. J. A. Sloane: edited
Discussion
Wed Sep 20
04:07
Michel Marcus: for unkn, see https://oeis.org/wiki/Clear-cut_examples_of_keywords#unkn rather than https://oeis.org/eishelp2.html#RK
Discussion
Wed Sep 20
03:53
Michel Marcus: to be proposed : rather leave empty
Discussion
Tue Sep 19
10:09
Gilles Macario-Rat: I read this : unkn: Little is known; an unsolved problem; anyone who can find a formula or recurrence is urged to add it to the entry.
Is it something else ?
17:24
Hugo Pfoertner: I recommend using "Groebner" instead of "Grobner" in the name of the sequence if umlauts are not allowed. "Grobner" is perceived as wrong by all German-speaking readers. "Grobner" is also almost never used in OEIS.
Discussion
Tue Sep 19
08:21
Michel Marcus: unkn is something else
Discussion
Tue Sep 19
07:01
Stefano Spezia: Are you sure about “unkn” keyword?
07:29
Gilles Macario-Rat: I assume it is, but I wish it were not...
I made some experiments and found formulas when degree is between n/2 and n+1, or degree = 2 or 3, but nothing between 4 and n/2.
