A233970 - cp's OEIS frontend

A233970 Toothpick sequence on hexagonal net starting from the vertex of a 60-degree wedge (see Comments lines for precise definition).

n	a(n)
0	0
1	1
2	3
3	5
4	9
5	11
6	15
7	21
8	29
9	31
10	35
11	41
12	51
13	61
14	69
15	83
16	99
17	101
18	105
19	111
20	121
21	131
22	141
23	159
24	183
25	205
26	213
27	227
28	249
29	275
30	291
31	321
32	353
33	355
34	359
35	365
36	375
37	385
38	395
39	413
40	437
41	459
42	469
43	487
44	515
45	553
46	581
47	627
48	683
49	737
50	745
51	759
52	781
53	807

[0, 1, 3, 5, 9, 11, 15, 21, 29, 31, 35, 41, 51, 61, 69, 83, 99, 101, 105, 111, 121, 131, 141, 159, 183, 205, 213, 227, 249, 275, 291, 321, 353, 355, 359, 365, 375, 385, 395, 413, 437, 459, 469, 487, 515, 553, 581, 627, 683, 737, 745, 759, 781, 807]

cp's OEIS Frontend

A233970 Toothpick sequence on hexagonal net starting from the vertex of a 60-degree wedge (see Comments lines for precise definition).

Table of values

List of values

n	a(n)
0	0
1	1
2	3
3	5
4	9
5	11
6	15
7	21
8	29
9	31
10	35
11	41
12	51
13	61
14	69
15	83
16	99
17	101
18	105
19	111
20	121
21	131
22	141
23	159
24	183
25	205
26	213
27	227
28	249
29	275
30	291
31	321
32	353
33	355
34	359
35	365
36	375
37	385
38	395
39	413
40	437
41	459
42	469
43	487
44	515
45	553
46	581
47	627
48	683
49	737
50	745
51	759
52	781
53	807

n	a(n)
0	0
1	1
2	3
3	5
4	9
5	11
6	15
7	21
8	29
9	31
10	35
11	41
12	51
13	61
14	69
15	83
16	99
17	101
18	105
19	111
20	121
21	131
22	141
23	159
24	183
25	205
26	213
27	227
28	249
29	275
30	291
31	321
32	353
33	355
34	359
35	365
36	375
37	385
38	395
39	413
40	437
41	459
42	469
43	487
44	515
45	553
46	581
47	627
48	683
49	737
50	745
51	759
52	781
53	807

n	a(n)
0	0
1	1
2	3
3	5
4	9
5	11
6	15
7	21
8	29
9	31
10	35
11	41
12	51
13	61
14	69
15	83
16	99
17	101
18	105
19	111
20	121
21	131
22	141
23	159
24	183
25	205
26	213
27	227
28	249
29	275
30	291
31	321
32	353
33	355
34	359
35	365
36	375
37	385
38	395
39	413
40	437
41	459
42	469
43	487
44	515
45	553
46	581
47	627
48	683
49	737
50	745
51	759
52	781
53	807