A126428 - cp's OEIS frontend

A126428 a(1) = 1; for n > 1, a(n) = smallest number > a(n-1) such that pairwise sums and (absolute) differences of distinct elements are all distinct.

n	a(n)
1	1
2	2
3	6
4	12
5	21
6	37
7	58
8	84
9	112
10	129
11	173
12	213
13	266
14	307
15	373
16	446
17	513
18	589
19	639
20	829
21	916
22	1061
23	1209
24	1297
25	1429
26	1461
27	1626
28	1783
29	1964
30	2220
31	2576
32	2653
33	2875
34	3064
35	3307
36	3605
37	3889
38	4228
39	4332
40	4412
41	4658
42	5337
43	5618
44	5647
45	6281
46	6511
47	7001
48	7388

[1, 2, 6, 12, 21, 37, 58, 84, 112, 129, 173, 213, 266, 307, 373, 446, 513, 589, 639, 829, 916, 1061, 1209, 1297, 1429, 1461, 1626, 1783, 1964, 2220, 2576, 2653, 2875, 3064, 3307, 3605, 3889, 4228, 4332, 4412, 4658, 5337, 5618, 5647, 6281, 6511, 7001, 7388]

cp's OEIS Frontend

A126428 a(1) = 1; for n > 1, a(n) = smallest number > a(n-1) such that pairwise sums and (absolute) differences of distinct elements are all distinct.

Table of values

List of values