A063436 - cp's OEIS frontend

A063436 Write 1, 2, 3, 4, ... counterclockwise in a hexagonal spiral around 0 starting left down, then a(n) is the sequence found by reading from 0 in the vertical upward direction.

n	a(n)
0	0
1	15
2	54
3	117
4	204
5	315
6	450
7	609
8	792
9	999
10	1230
11	1485
12	1764
13	2067
14	2394
15	2745
16	3120
17	3519
18	3942
19	4389
20	4860
21	5355
22	5874
23	6417
24	6984
25	7575
26	8190
27	8829
28	9492
29	10179
30	10890
31	11625
32	12384
33	13167
34	13974
35	14805
36	15660
37	16539
38	17442
39	18369
40	19320
41	20295
42	21294
43	22317

[0, 15, 54, 117, 204, 315, 450, 609, 792, 999, 1230, 1485, 1764, 2067, 2394, 2745, 3120, 3519, 3942, 4389, 4860, 5355, 5874, 6417, 6984, 7575, 8190, 8829, 9492, 10179, 10890, 11625, 12384, 13167, 13974, 14805, 15660, 16539, 17442, 18369, 19320, 20295, 21294, 22317]

cp's OEIS Frontend

A063436 Write 1, 2, 3, 4, ... counterclockwise in a hexagonal spiral around 0 starting left down, then a(n) is the sequence found by reading from 0 in the vertical upward direction.

Table of values

List of values