A375859 - cp's OEIS frontend

A375859 In an n X n grid draw straight walls between cells, starting at a border, such that the resulting figure is connected and has only one-cell wide paths; a(n) is the number of solutions up to rotations.

n	a(n)
1	1
2	1
3	17
4	278
5	6299
6	151928
7	3980838
8	112842972
9	3477284215
10	116563600340
11	4243245979546
12	167133229071276
13	7090692397872054
14	322501848961962040
15	15654927191595331100
16	807745569550956567160
17	44138380646154800057431
18	2546015709192980766909132
19	154576479598442363146107882

[1, 1, 17, 278, 6299, 151928, 3980838, 112842972, 3477284215, 116563600340, 4243245979546, 167133229071276, 7090692397872054, 322501848961962040, 15654927191595331100, 807745569550956567160, 44138380646154800057431, 2546015709192980766909132, 154576479598442363146107882]

cp's OEIS Frontend

A375859 In an n X n grid draw straight walls between cells, starting at a border, such that the resulting figure is connected and has only one-cell wide paths; a(n) is the number of solutions up to rotations.

Table of values

List of values