A257941 - cp's OEIS frontend

A257941 Lexicographically earliest sequence of positive integers such that the terms and their absolute first differences are all distinct and no term is the sum of two distinct earlier terms.

n	a(n)
1	1
2	3
3	7
4	12
5	18
6	26
7	9
8	20
9	34
10	24
11	39
12	55
13	22
14	45
15	66
16	28
17	47
18	72
19	85
20	49
21	76
22	108
23	68
24	99
25	53
26	82
27	112
28	70
29	114
30	149
31	74
32	122
33	172
34	93
35	145
36	203
37	101
38	160
39	95
40	162
41	216
42	118
43	187
44	224
45	141
46	214
47	143
48	235
49	139
50	195
51	281
52	164
53	241
54	329
55	166
56	260
57	170
58	283
59	168

[1, 3, 7, 12, 18, 26, 9, 20, 34, 24, 39, 55, 22, 45, 66, 28, 47, 72, 85, 49, 76, 108, 68, 99, 53, 82, 112, 70, 114, 149, 74, 122, 172, 93, 145, 203, 101, 160, 95, 162, 216, 118, 187, 224, 141, 214, 143, 235, 139, 195, 281, 164, 241, 329, 166, 260, 170, 283, 168]

cp's OEIS Frontend

A257941 Lexicographically earliest sequence of positive integers such that the terms and their absolute first differences are all distinct and no term is the sum of two distinct earlier terms.

Table of values

List of values

n	a(n)
1	1
2	3
3	7
4	12
5	18
6	26
7	9
8	20
9	34
10	24
11	39
12	55
13	22
14	45
15	66
16	28
17	47
18	72
19	85
20	49
21	76
22	108
23	68
24	99
25	53
26	82
27	112
28	70
29	114
30	149
31	74
32	122
33	172
34	93
35	145
36	203
37	101
38	160
39	95
40	162
41	216
42	118
43	187
44	224
45	141
46	214
47	143
48	235
49	139
50	195
51	281
52	164
53	241
54	329
55	166
56	260
57	170
58	283
59	168

n	a(n)
1	1
2	3
3	7
4	12
5	18
6	26
7	9
8	20
9	34
10	24
11	39
12	55
13	22
14	45
15	66
16	28
17	47
18	72
19	85
20	49
21	76
22	108
23	68
24	99
25	53
26	82
27	112
28	70
29	114
30	149
31	74
32	122
33	172
34	93
35	145
36	203
37	101
38	160
39	95
40	162
41	216
42	118
43	187
44	224
45	141
46	214
47	143
48	235
49	139
50	195
51	281
52	164
53	241
54	329
55	166
56	260
57	170
58	283
59	168

n	a(n)
1	1
2	3
3	7
4	12
5	18
6	26
7	9
8	20
9	34
10	24
11	39
12	55
13	22
14	45
15	66
16	28
17	47
18	72
19	85
20	49
21	76
22	108
23	68
24	99
25	53
26	82
27	112
28	70
29	114
30	149
31	74
32	122
33	172
34	93
35	145
36	203
37	101
38	160
39	95
40	162
41	216
42	118
43	187
44	224
45	141
46	214
47	143
48	235
49	139
50	195
51	281
52	164
53	241
54	329
55	166
56	260
57	170
58	283
59	168