A285397 - cp's OEIS frontend

A285397 Start with a single cell at coordinates (0, 0, 0), then iteratively subdivide the grid into 3 X 3 X 3 cells and remove the cells whose sum of modulo 2 coordinates is 3; a(n) is the number of cells after n iterations.

n	a(n)
0	1
1	26
2	646
3	15818
4	385822
5	9401330
6	229023958
7	5578844858
8	135894050926
9	3310204057250
10	80632220390758
11	1964094376340522
12	47842741143064894
13	1165385872796078546
14	28387257791866411894
15	691476036231391881242
16	16843441238514542846350
17	410283940250387099210114

[1, 26, 646, 15818, 385822, 9401330, 229023958, 5578844858, 135894050926, 3310204057250, 80632220390758, 1964094376340522, 47842741143064894, 1165385872796078546, 28387257791866411894, 691476036231391881242, 16843441238514542846350, 410283940250387099210114]

cp's OEIS Frontend

A285397 Start with a single cell at coordinates (0, 0, 0), then iteratively subdivide the grid into 3 X 3 X 3 cells and remove the cells whose sum of modulo 2 coordinates is 3; a(n) is the number of cells after n iterations.

Table of values

List of values