A269135 - cp's OEIS frontend

A269135 Numbers n which are neither a prime nor a square of a prime such that there is no d, 2<=d<=n/2, which divides binomial(n-d-1,d-1) and is not coprime to n.

n	a(n)
1	1
2	6
3	8
4	10
5	12
6	15
7	20
8	21
9	24
10	33
11	35
12	143
13	323
14	899
15	1763
16	3599
17	5183
18	10403
19	11663
20	19043
21	22499
22	32399
23	36863
24	39203
25	51983
26	57599
27	72899
28	79523
29	97343
30	121103
31	176399
32	186623
33	213443
34	272483
35	324899
36	359999

[1, 6, 8, 10, 12, 15, 20, 21, 24, 33, 35, 143, 323, 899, 1763, 3599, 5183, 10403, 11663, 19043, 22499, 32399, 36863, 39203, 51983, 57599, 72899, 79523, 97343, 121103, 176399, 186623, 213443, 272483, 324899, 359999]

cp's OEIS Frontend

A269135 Numbers n which are neither a prime nor a square of a prime such that there is no d, 2<=d<=n/2, which divides binomial(n-d-1,d-1) and is not coprime to n.

Table of values

List of values