cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A013630 Irregular triangle read by rows, giving coefficients of polynomials arising as numerators of certain Hilbert series.

This page as a plain text file.
%I A013630 #30 Apr 16 2023 21:20:38
%S A013630 1,1,1,1,1,8,22,8,1,1,34,295,565,295,34,1
%N A013630 Irregular triangle read by rows, giving coefficients of polynomials arising as numerators of certain Hilbert series.
%C A013630 The row 1,8,22,8,1 occurs on p. 78 of Ottaviani as the numerator for the Hilbert series of the invariant ring of eight ordered points in a projective space. - _Tom Copeland_, Feb 27 2020
%H A013630 G. Ottaviani, <a href="https://arxiv.org/abs/1305.2749">Five lectures on projective invariants</a>, arXiv preprint arXiv:1305.2749 [math.AG], 2013.
%H A013630 D.-N. Verma, <a href="/A012249/a012249.pdf">Towards Classifying Finite Point-Set Configurations</a>, 1997, Unpublished. [Scanned copy of annotated version of preprint given to me by the author in 1997. - _N. J. A. Sloane_, Oct 04 2021]
%e A013630 Triangle begins:
%e A013630 1,
%e A013630 1, 1, 1,
%e A013630 1, 8, 22, 8, 1,
%e A013630 1, 34, 295, 565, 295, 34, 1,
%e A013630 ...
%K A013630 tabf,nonn,more
%O A013630 2,6
%A A013630 _N. J. A. Sloane_