A207645 - cp's OEIS frontend

A207645 Triangle where T(n,k) = Product_{j=1..k} floor(n/j - 1), as read by rows n>=0, columns k=0..[n/2].

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	3
8	3
9	1
10	4
11	4
12	1
13	5
14	10
15	10
16	1
17	6
18	12
19	12
20	1
21	7
22	21
23	21
24	21
25	1
26	8
27	24
28	48
29	48
30	1
31	9
32	36
33	72
34	72
35	72
36	1
37	10
38	40
39	80
40	80
41	80
42	1
43	11
44	55
45	165
46	330
47	330
48	330
49	1
50	12
51	60
52	180
53	360
54	360
55	360
56	1
57	13
58	78
59	234
60	468
61	468
62	468
63	468
64	1
65	14
66	84
67	336
68	672
69	1344
70	1344
71	1344

[1, 1, 1, 1, 1, 2, 1, 3, 3, 1, 4, 4, 1, 5, 10, 10, 1, 6, 12, 12, 1, 7, 21, 21, 21, 1, 8, 24, 48, 48, 1, 9, 36, 72, 72, 72, 1, 10, 40, 80, 80, 80, 1, 11, 55, 165, 330, 330, 330, 1, 12, 60, 180, 360, 360, 360, 1, 13, 78, 234, 468, 468, 468, 468, 1, 14, 84, 336, 672, 1344, 1344, 1344]

cp's OEIS Frontend

A207645 Triangle where T(n,k) = Product_{j=1..k} floor(n/j - 1), as read by rows n>=0, columns k=0..[n/2].

Table of values

List of values