A134338 - cp's OEIS frontend

A134338 a(n) = product of the "isolated divisors" of n. A divisor k of n is isolated if neither k-1 nor k+1 divides n.

n	a(n)
1	1
2	1
3	3
4	4
5	5
6	6
7	7
8	32
9	27
10	50
11	11
12	72
13	13
14	98
15	225
16	512
17	17
18	972
19	19
20	200
21	441
22	242
23	23
24	13824
25	125
26	338
27	729
28	10976
29	29
30	4500
31	31
32	16384
33	1089
34	578
35	1225
36	419904
37	37
38	722
39	1521
40	64000
41	41
42	12348
43	43
44	42592
45	91125
46	1058
47	47
48	10616832
49	343
50	62500
51	2601

[1, 1, 3, 4, 5, 6, 7, 32, 27, 50, 11, 72, 13, 98, 225, 512, 17, 972, 19, 200, 441, 242, 23, 13824, 125, 338, 729, 10976, 29, 4500, 31, 16384, 1089, 578, 1225, 419904, 37, 722, 1521, 64000, 41, 12348, 43, 42592, 91125, 1058, 47, 10616832, 343, 62500, 2601]

cp's OEIS Frontend

A134338 a(n) = product of the "isolated divisors" of n. A divisor k of n is isolated if neither k-1 nor k+1 divides n.

Table of values

List of values