A379978 - cp's OEIS frontend

A379978 a(n) is the smallest positive integer which can be represented as the sum of its prime divisors in exactly n ways, or -1 if no such integer exists.

n	a(n)
0	1
1	2
2	6
3	12
4	18
5	24
6	50
7	36
8	98
9	48
10	54
11	100
12	242
13	72
14	338
15	196
16	225
17	96
18	578
19	108
20	722
21	30
22	441
23	484
24	1058
25	144
26	250
27	676
28	42
29	392
30	1682
31	-1
32	1922
33	192
34	1089
35	1156
36	1225
37	216
38	2738
39	1444
40	1521
41	400
42	66
43	70
44	3698
45	968
46	675
47	2116
48	4418
49	78
50	686
51	500
52	2601
53	1352
54	5618
55	324
56	3025
57	784
58	3249
59	3364
60	6962
61	105
62	7442
63	102
64	1323
65	110
66	4225

[1, 2, 6, 12, 18, 24, 50, 36, 98, 48, 54, 100, 242, 72, 338, 196, 225, 96, 578, 108, 722, 30, 441, 484, 1058, 144, 250, 676, 42, 392, 1682, -1, 1922, 192, 1089, 1156, 1225, 216, 2738, 1444, 1521, 400, 66, 70, 3698, 968, 675, 2116, 4418, 78, 686, 500, 2601, 1352, 5618, 324, 3025, 784, 3249, 3364, 6962, 105, 7442, 102, 1323, 110, 4225]

cp's OEIS Frontend

A379978 a(n) is the smallest positive integer which can be represented as the sum of its prime divisors in exactly n ways, or -1 if no such integer exists.

Table of values

List of values