A305995 - cp's OEIS frontend

A305995 Rectangular array read by downward antidiagonals; row n consists of the numbers m such that n is the denominator of d(k)/d(1) + d(k-1)/d(2) + ... + d(k)/d(1), where d(1),d(2),...,d(k) are the unitary divisors of m.

n	a(n)
1	1
2	10
3	2
4	65
5	68
6	3
7	130
8	520
9	6
10	4
11	260
12	1768
13	15
14	40
15	5
16	340
17	2600
18	30
19	104
20	50
21	12
22	1105
23	6760
24	60
25	1040
26	1700
27	120
28	7
29	1972
30	17680
31	150
32	20560
33	3250
34	312
35	14
36	8
37	2210
38	62600
39	195
40	35360
41	7825
42	600
43	35
44	2080
45	9
46	4420
47	165896
48	204
49	85280
50	27625
51	3120
52	70
53	4112
54	18
55	20

[1, 10, 2, 65, 68, 3, 130, 520, 6, 4, 260, 1768, 15, 40, 5, 340, 2600, 30, 104, 50, 12, 1105, 6760, 60, 1040, 1700, 120, 7, 1972, 17680, 150, 20560, 3250, 312, 14, 8, 2210, 62600, 195, 35360, 7825, 600, 35, 2080, 9, 4420, 165896, 204, 85280, 27625, 3120, 70, 4112, 18, 20]

cp's OEIS Frontend

A305995 Rectangular array read by downward antidiagonals; row n consists of the numbers m such that n is the denominator of d(k)/d(1) + d(k-1)/d(2) + ... + d(k)/d(1), where d(1),d(2),...,d(k) are the unitary divisors of m.

Table of values

List of values