A256107 - cp's OEIS frontend

A256107 Irregular triangle read by rows, T(n,k) is the number of pentagrams on the k layers at n iterations of a pentagram fractal (see comment).

n	a(n)
0	1
1	2
2	4
3	1
4	7
5	2
6	2
7	12
8	4
9	5
10	2
11	1
12	20
13	7
14	10
15	4
16	2
17	2
18	33
19	12
20	18
21	8
22	4
23	4
24	2
25	1
26	54
27	20
28	31
29	14
30	7
31	8
32	4
33	2
34	2
35	88
36	33
37	52
38	24
39	12
40	14
41	8
42	4
43	4
44	2
45	1
46	143
47	54
48	86
49	40
50	20
51	24
52	14
53	7
54	8
55	4
56	2
57	2
58	232
59	88
60	141
61	66
62	33
63	40
64	24
65	12
66	14
67	8
68	4
69	4
70	2
71	1
72	376
73	143
74	230
75	108
76	54
77	66

[1, 2, 4, 1, 7, 2, 2, 12, 4, 5, 2, 1, 20, 7, 10, 4, 2, 2, 33, 12, 18, 8, 4, 4, 2, 1, 54, 20, 31, 14, 7, 8, 4, 2, 2, 88, 33, 52, 24, 12, 14, 8, 4, 4, 2, 1, 143, 54, 86, 40, 20, 24, 14, 7, 8, 4, 2, 2, 232, 88, 141, 66, 33, 40, 24, 12, 14, 8, 4, 4, 2, 1, 376, 143, 230, 108, 54, 66]

cp's OEIS Frontend

A256107 Irregular triangle read by rows, T(n,k) is the number of pentagrams on the k layers at n iterations of a pentagram fractal (see comment).

Table of values

List of values

n	a(n)
0	1
1	2
2	4
3	1
4	7
5	2
6	2
7	12
8	4
9	5
10	2
11	1
12	20
13	7
14	10
15	4
16	2
17	2
18	33
19	12
20	18
21	8
22	4
23	4
24	2
25	1
26	54
27	20
28	31
29	14
30	7
31	8
32	4
33	2
34	2
35	88
36	33
37	52
38	24
39	12
40	14
41	8
42	4
43	4
44	2
45	1
46	143
47	54
48	86
49	40
50	20
51	24
52	14
53	7
54	8
55	4
56	2
57	2
58	232
59	88
60	141
61	66
62	33
63	40
64	24
65	12
66	14
67	8
68	4
69	4
70	2
71	1
72	376
73	143
74	230
75	108
76	54
77	66

n	a(n)
0	1
1	2
2	4
3	1
4	7
5	2
6	2
7	12
8	4
9	5
10	2
11	1
12	20
13	7
14	10
15	4
16	2
17	2
18	33
19	12
20	18
21	8
22	4
23	4
24	2
25	1
26	54
27	20
28	31
29	14
30	7
31	8
32	4
33	2
34	2
35	88
36	33
37	52
38	24
39	12
40	14
41	8
42	4
43	4
44	2
45	1
46	143
47	54
48	86
49	40
50	20
51	24
52	14
53	7
54	8
55	4
56	2
57	2
58	232
59	88
60	141
61	66
62	33
63	40
64	24
65	12
66	14
67	8
68	4
69	4
70	2
71	1
72	376
73	143
74	230
75	108
76	54
77	66

n	a(n)
0	1
1	2
2	4
3	1
4	7
5	2
6	2
7	12
8	4
9	5
10	2
11	1
12	20
13	7
14	10
15	4
16	2
17	2
18	33
19	12
20	18
21	8
22	4
23	4
24	2
25	1
26	54
27	20
28	31
29	14
30	7
31	8
32	4
33	2
34	2
35	88
36	33
37	52
38	24
39	12
40	14
41	8
42	4
43	4
44	2
45	1
46	143
47	54
48	86
49	40
50	20
51	24
52	14
53	7
54	8
55	4
56	2
57	2
58	232
59	88
60	141
61	66
62	33
63	40
64	24
65	12
66	14
67	8
68	4
69	4
70	2
71	1
72	376
73	143
74	230
75	108
76	54
77	66