A261987 - cp's OEIS frontend

A261987 Triangle read by rows: row n lists the set of n coprime composite numbers that minimizes the difference between first and last terms, and then minimizes the average of the terms.

n	a(n)
1	4
2	8
3	9
4	25
5	26
6	27
7	91
8	92
9	93
10	95
11	115
12	116
13	117
14	119
15	121
16	527
17	529
18	531
19	532
20	533
21	535
22	527
23	529
24	531
25	533
26	535
27	536
28	539
29	1331
30	1333
31	1334
32	1337
33	1339
34	1341
35	1343
36	1345
37	1331
38	1333
39	1334
40	1337
41	1339
42	1341
43	1343
44	1345
45	1349

[4, 8, 9, 25, 26, 27, 91, 92, 93, 95, 115, 116, 117, 119, 121, 527, 529, 531, 532, 533, 535, 527, 529, 531, 533, 535, 536, 539, 1331, 1333, 1334, 1337, 1339, 1341, 1343, 1345, 1331, 1333, 1334, 1337, 1339, 1341, 1343, 1345, 1349]

cp's OEIS Frontend

A261987 Triangle read by rows: row n lists the set of n coprime composite numbers that minimizes the difference between first and last terms, and then minimizes the average of the terms.

Table of values

List of values