A358429 - cp's OEIS frontend

A358429 Construct a square spiral: a(n) is the sum of all adjacent terms a(k) in the spiral for k < n; a(1) = 0, a(2) = 1.

n	a(n)
1	0
2	1
3	1
4	2
5	2
6	4
7	4
8	9
9	10
10	11
11	23
12	25
13	26
14	54
15	59
16	63
17	65
18	134
19	144
20	152
21	156
22	321
23	344
24	374
25	395
26	406
27	835
28	894
29	968
30	1019
31	1045
32	2144
33	2283
34	2459
35	2646
36	2774
37	2839
38	5812
39	6155
40	6585
41	7037
42	7345
43	7501
44	15323
45	16144
46	17183
47	18296
48	19471
49	20272

[0, 1, 1, 2, 2, 4, 4, 9, 10, 11, 23, 25, 26, 54, 59, 63, 65, 134, 144, 152, 156, 321, 344, 374, 395, 406, 835, 894, 968, 1019, 1045, 2144, 2283, 2459, 2646, 2774, 2839, 5812, 6155, 6585, 7037, 7345, 7501, 15323, 16144, 17183, 18296, 19471, 20272]

cp's OEIS Frontend

A358429 Construct a square spiral: a(n) is the sum of all adjacent terms a(k) in the spiral for k < n; a(1) = 0, a(2) = 1.

Table of values

List of values