OFFSET
0,1
COMMENTS
This graph BC(n,2) is also called SC(n,2) in earlier sequences (e.g. A331452). Once the Blomberg et al. paper is accepted for publication we will change the name from SC to BC.
LINKS
Lars Blomberg, Scott R. Shannon, N. J. A. Sloane, Graphical Enumeration and Stained Glass Windows, 1: Rectangular Grids, (2020). Also arXiv:2009.07918. See Eq. (7.2).
FORMULA
a(n) = (n^4+10*n^3+25*n^2+12*n+12)/4.
MATHEMATICA
Table[(n^4 + 10*n^3 + 25*n^2 + 12*n + 12)/4, {n, 0, 50}] (* Wesley Ivan Hurt, Sep 04 2022 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, May 20 2021
STATUS
approved