A278180 - cp's OEIS frontend

A278180 Square spiral in which each new term is the sum of its two largest neighbors.

n	a(n)
1	1
2	1
3	2
4	3
5	4
6	7
7	8
8	15
9	16
10	17
11	33
12	35
13	37
14	72
15	76
16	80
17	84
18	164
19	172
20	180
21	188
22	368
23	384
24	401
25	418
26	435
27	853
28	888
29	925
30	962
31	999
32	1961
33	2037
34	2117
35	2201
36	2285
37	2369
38	4654
39	4826
40	5006
41	5194
42	5382
43	5570
44	10952
45	11336
46	11737
47	12155
48	12590
49	13025
50	13460
51	26485
52	27373
53	28298
54	29260
55	30259
56	31258
57	32257
58	63515

[1, 1, 2, 3, 4, 7, 8, 15, 16, 17, 33, 35, 37, 72, 76, 80, 84, 164, 172, 180, 188, 368, 384, 401, 418, 435, 853, 888, 925, 962, 999, 1961, 2037, 2117, 2201, 2285, 2369, 4654, 4826, 5006, 5194, 5382, 5570, 10952, 11336, 11737, 12155, 12590, 13025, 13460, 26485, 27373, 28298, 29260, 30259, 31258, 32257, 63515]

cp's OEIS Frontend

A278180 Square spiral in which each new term is the sum of its two largest neighbors.

Table of values

List of values