A241883 - cp's OEIS frontend

A241883 Number of ways 1/n can be expressed as the sum of four distinct unit fractions: 1/n = 1/w + 1/x + 1/y + 1/z satisfying 0 < w < x < y < z.

n	a(n)
1	6
2	71
3	272
4	586
5	978
6	1591
7	1865
8	3115
9	3772
10	4964
11	4225
12	8433
13	4987
14	10667
15	13659
16	10845
17	7513
18	17360
19	9569
20	28554
21	23309
22	17220
23	12326
24	37554
25	19984
26	24091
27	31056
28	42343
29	16095
30	57001
31	15076
32	42655
33	46885
34	38416
35	77887
36	71959
37	16692
38	42054
39	68894
40	95914
41	24566
42	100023
43	24224
44	99437
45	108756
46	41907
47	29711
48	127069
49	52811
50	94745
51	83433

[6, 71, 272, 586, 978, 1591, 1865, 3115, 3772, 4964, 4225, 8433, 4987, 10667, 13659, 10845, 7513, 17360, 9569, 28554, 23309, 17220, 12326, 37554, 19984, 24091, 31056, 42343, 16095, 57001, 15076, 42655, 46885, 38416, 77887, 71959, 16692, 42054, 68894, 95914, 24566, 100023, 24224, 99437, 108756, 41907, 29711, 127069, 52811, 94745, 83433]

cp's OEIS Frontend

A241883 Number of ways 1/n can be expressed as the sum of four distinct unit fractions: 1/n = 1/w + 1/x + 1/y + 1/z satisfying 0 < w < x < y < z.

Table of values

List of values