A278181 - cp's OEIS frontend

A278181 Hexagonal spiral constructed on the nodes of the triangular net in which each new term is the sum of its neighbors.

n	a(n)
0	1
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	9
9	12
10	14
11	19
12	22
13	29
14	33
15	42
16	47
17	59
18	74
19	82
20	99
21	108
22	129
23	155
24	169
25	202
26	243
27	265
28	316
29	378
30	411
31	486
32	575
33	622
34	728
35	861
36	1017
37	1099
38	1280
39	1487
40	1595
41	1832
42	2116
43	2440
44	2609
45	2980
46	3425
47	3933
48	4198
49	4779
50	5473
51	6262
52	6673
53	7570
54	8631
55	9828
56	10450
57	11800
58	13389
59	15267
60	17383

[1, 1, 2, 3, 4, 5, 7, 8, 9, 12, 14, 19, 22, 29, 33, 42, 47, 59, 74, 82, 99, 108, 129, 155, 169, 202, 243, 265, 316, 378, 411, 486, 575, 622, 728, 861, 1017, 1099, 1280, 1487, 1595, 1832, 2116, 2440, 2609, 2980, 3425, 3933, 4198, 4779, 5473, 6262, 6673, 7570, 8631, 9828, 10450, 11800, 13389, 15267, 17383]

cp's OEIS Frontend

A278181 Hexagonal spiral constructed on the nodes of the triangular net in which each new term is the sum of its neighbors.

Table of values

List of values