A187504 - cp's OEIS frontend

A187504 Let i be in {1,2,3,4} and let r >= 0 be an integer. Let p = {p_1, p_2, p_3, p_4} = {-1,0,1,2}, n=3r+p_i, and define a(-1)=0. Then a(n)=a(3r+p_i) gives the quantity of H_(9,2,0) tiles in a subdivided H_(9,i,r) tile after linear scaling by the factor Q^r, where Q=sqrt(x^3-2x) with x=2cos(Pi/9).

n	a(n)
0	1
1	0
2	0
3	0
4	1
5	1
6	2
7	2
8	2
9	4
10	6
11	7
12	13
13	17
14	19
15	36
16	49
17	56
18	105
19	141
20	160
21	301
22	406
23	462
24	868
25	1169
26	1329
27	2498
28	3366
29	3828
30	7194
31	9692
32	11021
33	20713
34	27907
35	31735
36	59642
37	80355
38	91376
39	171731
40	231373
41	263108
42	494481
43	666212
44	757588

[1, 0, 0, 0, 1, 1, 2, 2, 2, 4, 6, 7, 13, 17, 19, 36, 49, 56, 105, 141, 160, 301, 406, 462, 868, 1169, 1329, 2498, 3366, 3828, 7194, 9692, 11021, 20713, 27907, 31735, 59642, 80355, 91376, 171731, 231373, 263108, 494481, 666212, 757588]

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