A298681 - cp's OEIS frontend

A298681 Start with the square tile of the Shield tiling and recursively apply the substitution rule. a(n) is the number of triangles with 6 markings after n iterations.

n	a(n)
0	0
1	4
2	4
3	32
4	80
5	372
6	1236
7	4912
8	17728
9	67364
10	248996
11	934080
12	3476400
13	12993364
14	48453364
15	180907472
16	675001760
17	2519449092
18	9402095556
19	35090331232
20	130956433168
21	488740993844
22	1823996357396
23	6807266805360
24	25405026124800
25	94812927172324
26	353846503607524

[0, 4, 4, 32, 80, 372, 1236, 4912, 17728, 67364, 248996, 934080, 3476400, 12993364, 48453364, 180907472, 675001760, 2519449092, 9402095556, 35090331232, 130956433168, 488740993844, 1823996357396, 6807266805360, 25405026124800, 94812927172324, 353846503607524]

cp's OEIS Frontend

A298681 Start with the square tile of the Shield tiling and recursively apply the substitution rule. a(n) is the number of triangles with 6 markings after n iterations.

Table of values

List of values