A298678 - cp's OEIS frontend

A298678 Start with the hexagonal tile of the Shield tiling and recursively apply the substitution rule. a(n) is the number of hexagonal tiles after n iterations.

n	a(n)
0	1
1	0
2	7
3	12
4	73
5	216
6	919
7	3204
8	12409
9	45408
10	171271
11	635580
12	2379241
13	8865000
14	33113527
15	123523572
16	461111833
17	1720661616
18	6422058919
19	23966525484
20	89446140169
21	333813840888
22	1245817611991
23	4649439829860
24	17351975261881
25	64758394108800
26	241681735391047

[1, 0, 7, 12, 73, 216, 919, 3204, 12409, 45408, 171271, 635580, 2379241, 8865000, 33113527, 123523572, 461111833, 1720661616, 6422058919, 23966525484, 89446140169, 333813840888, 1245817611991, 4649439829860, 17351975261881, 64758394108800, 241681735391047]

cp's OEIS Frontend

A298678 Start with the hexagonal tile of the Shield tiling and recursively apply the substitution rule. a(n) is the number of hexagonal tiles after n iterations.

Table of values

List of values